WEBVTT - From the Vault: Like a Circle in a Spiral, Part 1

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<v Speaker 1>Hey, welcome to Stuff to Blow Your Mind. This is

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<v Speaker 1>Robert Lamb and I'm Joe McCormick, and it's Saturday time

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<v Speaker 1>for the Vault. This episode originally aired December eight. It

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<v Speaker 1>was part one of our series about spinning around in circles. Yeah,

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<v Speaker 1>these were a lot of fun. We get into sort

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<v Speaker 1>of the you know, what happens in the body when

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<v Speaker 1>you spin around in circles? So what happens in the mind,

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<v Speaker 1>or what can happen in the mind, What kind of

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<v Speaker 1>practices do we have to deal with these changes? And

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<v Speaker 1>then also what kind of cultural traditions are there? All right,

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<v Speaker 1>let's spiral out. Welcome just about to Blow your Mind

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<v Speaker 1>production of My Heart Radio. Hey, welcome to Stuff to

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<v Speaker 1>Blow your Mind. My name is Robert Lamb and I'm

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<v Speaker 1>Joe McCormick. And today we're gonna be talking about spinning

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<v Speaker 1>around in circles. That's right, This is this is probably

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<v Speaker 1>gonna be a two partter. Sometimes we figured this out

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<v Speaker 1>as we go, but I believe this will be a

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<v Speaker 1>part one in a part two, and we're gonna be

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<v Speaker 1>We're gonna be looking at at humans spinning around in

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<v Speaker 1>circles from several different vantage points. So you know what

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<v Speaker 1>is it doing? Uh at a at a biological level, Uh,

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<v Speaker 1>you know a psychological level. Um, how does it factor

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<v Speaker 1>into various traditions and games, etcetera. Um, this is what

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<v Speaker 1>I'm pretty excited to do. And the genesis for this

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<v Speaker 1>one was a listener email who wrote in about about

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<v Speaker 1>spinning uh in um in ballet and we were we

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<v Speaker 1>we had a brief back and forth in a listener

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<v Speaker 1>mail of where we talked about then we're like, yeah,

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<v Speaker 1>we should totally do an episode. So here we are.

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<v Speaker 1>But to start off, I want to I want to

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<v Speaker 1>start off somewhere where at least my mind went to,

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<v Speaker 1>if not first, then maybe second or third. And that

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<v Speaker 1>is the world of of of fantasy. Combat has found

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<v Speaker 1>in science fiction and fantasy films, but also especially in

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<v Speaker 1>video games. Because when I think of people spinning, uh,

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<v Speaker 1>I have to say, I instantly think of im Bison

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<v Speaker 1>from Street Fighter doing his Psycho Crusher attack. Do you

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<v Speaker 1>remember this one, Joe? I didn't know what was called

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<v Speaker 1>the psycho Crusher, but I remember m Bison. So if

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<v Speaker 1>you ever played Street Fighter, he's like the big guy

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<v Speaker 1>in the hat. He's like the final Boss or something.

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<v Speaker 1>Isn't he. Yeah, yeah, or he tends to be. I

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<v Speaker 1>think sometimes they you know, later in incarnations they introduce

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<v Speaker 1>new bosses, but he's he's the boss. He's this boss

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<v Speaker 1>of street fighter. Yeah. And I think he's supposed to

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<v Speaker 1>be some kind of dictator or something. He's dressed up

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<v Speaker 1>in in I don't know, off brand military regalia. He's

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<v Speaker 1>wearing like a like a captain's hat that's read in

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<v Speaker 1>some kind of uniform. But he's also got the magic powers,

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<v Speaker 1>and so he can attack you by flying at you

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<v Speaker 1>kind of like the raid in like horizontal dive towards you.

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<v Speaker 1>But he's spinning around in circles, yeah, isn't And he's

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<v Speaker 1>flaming of course. And also it's it's a cool attack. Um.

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<v Speaker 1>And you'll see various versions of that particular attack in

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<v Speaker 1>various games. But there's also the version that you see

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<v Speaker 1>in the Mortal Kombat games as his character Nam Kong

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<v Speaker 1>Lao he's the guy with the razor blade hat uh.

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<v Speaker 1>And you also see something similar with Baraka. But but

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<v Speaker 1>they both have attacks in some of the games where

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<v Speaker 1>they spin around like a top and either either it's

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<v Speaker 1>offensive like they're they're spinning like a top and coming

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<v Speaker 1>towards you with their blades or they're spinning like a

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<v Speaker 1>top Kung Mile does this where he he's deflecting you,

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<v Speaker 1>like so if you jump at him, he starts spinning

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<v Speaker 1>and then bam, your injury. Well, it's very much child

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<v Speaker 1>brain self defense logic, where you think, like if I

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<v Speaker 1>spin my arms around in circles, nobody could come anywhere

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<v Speaker 1>near me, right right, It's like that Simpsons been I'm

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<v Speaker 1>gonna move my arms like this, I'm gonna move my

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<v Speaker 1>feet like this, and if you get in the way,

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<v Speaker 1>you're gonna get hit. Uh. I think there's also a

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<v Speaker 1>Loony Tunes Tasmanian Devil vibe to a certainly the the

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<v Speaker 1>the Kung Lal style attack, you know, where you're just

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<v Speaker 1>spinning in one spot and you're just spinning so fast

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<v Speaker 1>that you become a little tornado. Right, So there's at

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<v Speaker 1>least an intuition people have that, you know, you could

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<v Speaker 1>really do some damage to somebody by spinning at them

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<v Speaker 1>in one way or another. Yeah, I have to say

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<v Speaker 1>in Star Wars, Darth City is busts out a cool

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<v Speaker 1>psycho crusher style. I'm not sure if it's actually an attack,

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<v Speaker 1>but more of like an advance, like a way to

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<v Speaker 1>quickly get at your opponents. But he uses this in

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<v Speaker 1>both the Revenge of the Sith and the Clone Wars series.

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<v Speaker 1>Oh okay, you know, I gotta say, I I hate

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<v Speaker 1>I know you're more of a fan of the prequels

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<v Speaker 1>than I am, and I'm not trying to start a fight,

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<v Speaker 1>but I gotta say one of my least favorite things

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<v Speaker 1>about the prequels is there's just way too much spinning

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<v Speaker 1>in the lightsaber battles, and the prequels way too much

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<v Speaker 1>like jumping and flipping around the the lightsaber battles become

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<v Speaker 1>less dramatic and more frantic. I like the lightsaber battle

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<v Speaker 1>in the Empire Strikes Back, you know that that's got

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<v Speaker 1>like classic sword fight drama. The ones where like Yoda

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<v Speaker 1>is just doing like fourteen somersaults in the air and

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<v Speaker 1>these three sixty jumps and and they're they're doing the

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<v Speaker 1>Psycho crusher and twirling around like a screw. I don't

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<v Speaker 1>know it kind of it kind of takes me out

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<v Speaker 1>of the Star Wars mindset. Well, Yoda shortened statue, I mean,

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<v Speaker 1>he's gotta he's gotta do those flips in order to

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<v Speaker 1>combat a tower opponent. Um. I see what you're saying.

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<v Speaker 1>But I do think that the City of Spin works

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<v Speaker 1>really well because it's like it comes out of nowhere,

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<v Speaker 1>and then he instantly uses more traditional attacks to to

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<v Speaker 1>kill like three different Jedi masters. So it seems it

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<v Speaker 1>seems to work well for him. You can't argue with success, Joe.

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<v Speaker 1>I correct there. And also I admit my ignorance because

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<v Speaker 1>when you shared this clip from the movie, I thought

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<v Speaker 1>for a second it was Christopher Lee, and I was like, oh,

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<v Speaker 1>Christopher Lee, okay, but it shows what I know. Well.

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<v Speaker 1>It does raise the question, though, do we see that

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<v Speaker 1>many full spins in actual combat, because I suppose even

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<v Speaker 1>with something like a spin kick, you have to be careful, right,

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<v Speaker 1>like you don't want to throw off your your own

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<v Speaker 1>balance or present your back to your opponent. Um. Without

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<v Speaker 1>even getting into the magical effects that are often associated

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<v Speaker 1>with these attacks and movies and video games. UM. Now,

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<v Speaker 1>I have to say, I'm not a real fight officionado.

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<v Speaker 1>I'm not like in the M M A or boxing

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<v Speaker 1>ing or you know any any of these. I tend

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<v Speaker 1>to like my my combat fictional and worked. Um, and

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<v Speaker 1>and in those contacts, I love a good spinning kick.

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<v Speaker 1>I love a nice roaring elbow in Japanese pro wrestling. Um.

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<v Speaker 1>But but I was initially unsure, like does it make

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<v Speaker 1>sense to spin or is that just a risky flourish. Well,

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<v Speaker 1>it's funny. I remember asking this myself from the first

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<v Speaker 1>person perspective, because when I was a kid, I took

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<v Speaker 1>I'm doing air quotes here, tae kwond I guess I

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<v Speaker 1>took whatever like severely watered down version of this martial

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<v Speaker 1>art was being taught to young children in Tennessee in

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<v Speaker 1>the ninety nineties. You know, it's like, uh, I'm not

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<v Speaker 1>sure what exactly I was learning, but I took taekwondo classes,

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<v Speaker 1>and I remember thinking, even then as a child, having

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<v Speaker 1>questions about the practicality of the spinning kick moves, because

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<v Speaker 1>there would be a type of kick you do where

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<v Speaker 1>you would turn around, you turn all the way around

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<v Speaker 1>and perform a kick, And I was like, why couldn't

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<v Speaker 1>you just kick without turning? Does this do some kind

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<v Speaker 1>of advantage? Would this ever be applicable in a real

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<v Speaker 1>self defense situation? Uh? Like, even as a kid, I

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<v Speaker 1>remember having the thought, this feels more like a dance

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<v Speaker 1>move than a useful fighting technique, which I think is

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<v Speaker 1>kind of applicable because at least the way I learned taekwondo,

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<v Speaker 1>it was in many ways indistinguishable from a dance class,

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<v Speaker 1>like you were learning routines, like patterns of movement that

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<v Speaker 1>were you know, they were exercise. It was aerobic exercise,

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<v Speaker 1>and it was I guess supposed to look good, look

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<v Speaker 1>cool from the outside. I don't know, well, I mean,

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<v Speaker 1>there is a lot of crossover between dance and exercise

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<v Speaker 1>and martial art. Uh you find you can find these

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<v Speaker 1>these intermingled uh to to a large extent. And I

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<v Speaker 1>guess also there's the psychological aspect to fight too, right,

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<v Speaker 1>something might be more about confusing an opponent. So I

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<v Speaker 1>wasn't just wasn't trre on this either, but I did

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<v Speaker 1>a quick glance around on YouTube to say, okay, are

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<v Speaker 1>legit n n A fights um ending with beIN kicks,

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<v Speaker 1>and I did find this this amazing clip from I

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<v Speaker 1>think earlier in the summer and apparently went viral. So

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<v Speaker 1>if you're at all in an m m A out there,

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<v Speaker 1>I'm sure you've seen this, but it's uh. Hakeen Buckley

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<v Speaker 1>is the m m A fighter and he busts out

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<v Speaker 1>this spin kick, uh in the middle of this match,

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<v Speaker 1>and it's just a complete knockout. I'm usually not one

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<v Speaker 1>to find a lot of joy in um in clips

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<v Speaker 1>of like legitimate knockout blows, but this one was pretty impressive.

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<v Speaker 1>I always fun they make me. They look kind of sickening,

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<v Speaker 1>like watching somebody's head snap back and then they fall

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<v Speaker 1>to the ground. It's like, yeah, this one is a

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<v Speaker 1>bit sickening, So don't don't don't look at it, look

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<v Speaker 1>for it unless you you want to see this sort

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<v Speaker 1>of action. But it did answer my question, like, well,

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<v Speaker 1>that's a spin kick. He certainly did a complete spin

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<v Speaker 1>on that and just knocked a guy out, so um so,

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<v Speaker 1>so that initially answered my question. And I started looking

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<v Speaker 1>around a little bit more on that, and I found

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<v Speaker 1>an interesting post about taekwondo spinning kicks at turtle press

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<v Speaker 1>dot com by sang h Kim and the author points

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<v Speaker 1>out that this apparently what spin kicks weren't a were

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<v Speaker 1>not a viable tactic in taekwondo until the nineteen eighties

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<v Speaker 1>uh and and the author explains that this is due

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<v Speaker 1>to advances in footwork and changes in fighting stance preferences

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<v Speaker 1>that made it more of a viable option. Also, less

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<v Speaker 1>restrictive protective gear made it more of an option, as

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<v Speaker 1>did sort of a broadening of style to include different

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<v Speaker 1>weight classes and sort of added creativity to the style.

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<v Speaker 1>So I found that interesting. Okay, well, I'll have to

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<v Speaker 1>take their word for it on that one. I cannot

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<v Speaker 1>claim to have thoughts on this. Well, I'd be interested

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<v Speaker 1>to hear what any and martial arts practitioners out there

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<v Speaker 1>listening to this episode have to say. Certainly right in

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<v Speaker 1>and let us know, you know, within your style or

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<v Speaker 1>within you know, martial arts in general. So one of

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<v Speaker 1>the things that gets going in my brain when I

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<v Speaker 1>think about spinning is that, uh and and I'll have

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<v Speaker 1>an example to talk about a little bit later on.

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<v Speaker 1>Spinning around in circles as an adult is not fun,

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<v Speaker 1>and in fact it's it's not fun for like significant

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<v Speaker 1>periods of time after you're done doing it. But I

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<v Speaker 1>remember as a child I loved spinning around in circles

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<v Speaker 1>and I would just like do it. I'd just be

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<v Speaker 1>out in the yard and be like, yea, I'm gonna

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<v Speaker 1>spin around until I fall over. This is great. Yeah,

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<v Speaker 1>I think a lot of adults, and if not, most

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<v Speaker 1>adults can can can relate to this. Yeah, because you

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<v Speaker 1>think back on the fun, spinny things you did as

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<v Speaker 1>a kid, like remember Mary go out rounds. They still

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<v Speaker 1>have these occasionally at playgrounds, but it was a standard

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<v Speaker 1>playgrounds when when we were kids, and it would just

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<v Speaker 1>be kids just getting this thing going to as fast

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<v Speaker 1>as possible, just incredible speeds and just write it. We

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<v Speaker 1>had this. There was a playground near my grandmother's house

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<v Speaker 1>that had the spinning aluminum death machine that I think

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<v Speaker 1>they originally I think they eventually had to take out

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<v Speaker 1>because it was just injury city. Every time children got

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<v Speaker 1>on it, they'd end up having to go to the hospital.

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<v Speaker 1>And I loved this thing because you could spin it

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<v Speaker 1>so fast, uh like it was it was human powered,

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<v Speaker 1>you know. It was one of those where you push it,

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<v Speaker 1>you'd get it going like Conan the Barbarian pushing the

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<v Speaker 1>mill wheel. But then you build up a lot of

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<v Speaker 1>speed and then you just grab hold and hang on.

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<v Speaker 1>I can't imagine what kind of horrific injuries came off

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<v Speaker 1>of this thing, but but it was great when I

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<v Speaker 1>was a kid. And now now that sounds like torture

0:11:17.800 --> 0:11:20.880
<v Speaker 1>to me. I mean the idea of spinning around like

0:11:21.040 --> 0:11:23.319
<v Speaker 1>I did as a child for fun. Now that sounds

0:11:23.360 --> 0:11:25.480
<v Speaker 1>about as appealing as a kick to the groy and

0:11:25.520 --> 0:11:28.440
<v Speaker 1>it's just like, why would you want to do that? Also,

0:11:28.480 --> 0:11:32.240
<v Speaker 1>add that the remember the playground mary uh, spinning things,

0:11:32.240 --> 0:11:35.000
<v Speaker 1>the merrygrounds and whatnot. They would often have that, you know,

0:11:35.040 --> 0:11:37.480
<v Speaker 1>the foot trail beat into the dirt around it, which

0:11:37.480 --> 0:11:40.439
<v Speaker 1>of course would become just a complete circular mud pit

0:11:40.600 --> 0:11:43.960
<v Speaker 1>after a rain, right exactly. Another big one is is,

0:11:43.960 --> 0:11:45.960
<v Speaker 1>of course, when you're a kid rolling down a hill,

0:11:46.440 --> 0:11:48.800
<v Speaker 1>like you know where you you lay down and then

0:11:48.840 --> 0:11:51.920
<v Speaker 1>you just roll down the hill like I remember that

0:11:51.960 --> 0:11:53.880
<v Speaker 1>being a lot of fun, and I remember, you know,

0:11:53.920 --> 0:11:55.880
<v Speaker 1>I encouraged that with with my own son at a

0:11:55.960 --> 0:11:58.679
<v Speaker 1>hill near our our house in a park. But as

0:11:58.679 --> 0:12:00.760
<v Speaker 1>an adult you're like, oh my goodness, there's a there's

0:12:00.800 --> 0:12:03.840
<v Speaker 1>a weird rock here, there's some sort of a pipe here,

0:12:04.120 --> 0:12:06.600
<v Speaker 1>all right, here's a fire ant nest, here's another fire

0:12:06.640 --> 0:12:09.440
<v Speaker 1>ant nest. And that's not even getting into the fact that, yeah,

0:12:09.480 --> 0:12:11.559
<v Speaker 1>as an adult, the idea of spinning that much, you

0:12:11.600 --> 0:12:13.600
<v Speaker 1>would just you'd never get up once you got to

0:12:13.640 --> 0:12:15.959
<v Speaker 1>the bottom of the hill. Yeah, And I think these, uh,

0:12:16.040 --> 0:12:18.480
<v Speaker 1>these changes in experience are not unique to us. It

0:12:18.520 --> 0:12:22.199
<v Speaker 1>seems like there's something going on where like spinning, spinning

0:12:22.240 --> 0:12:25.640
<v Speaker 1>is highly attractive to children then and it loses its

0:12:25.720 --> 0:12:29.320
<v Speaker 1>luster as the body ages. Yeah, so let's let's start

0:12:29.360 --> 0:12:32.280
<v Speaker 1>with the kids. Why did the kids love to spin? Well?

0:12:32.320 --> 0:12:34.480
<v Speaker 1>I was looking around the for information on this, and

0:12:34.559 --> 0:12:37.839
<v Speaker 1>I found a wonderful post on this at the pin

0:12:37.960 --> 0:12:41.720
<v Speaker 1>State Extensions Better Kid Care page, and they point out

0:12:41.760 --> 0:12:45.480
<v Speaker 1>that spinning, rolling, and swinging are crucial sensory and motor

0:12:45.559 --> 0:12:51.160
<v Speaker 1>skill inputs to help children's nervous systems mature and organize.

0:12:51.600 --> 0:12:54.640
<v Speaker 1>So they really need these sorts of big body movements

0:12:54.840 --> 0:12:57.839
<v Speaker 1>in ways they really make our tendency to isolate them

0:12:57.880 --> 0:13:01.600
<v Speaker 1>in deaths or in front of teleschool computers and so forth,

0:13:02.160 --> 0:13:05.000
<v Speaker 1>you know, more than a bit ridiculous. I think maybe

0:13:05.040 --> 0:13:08.320
<v Speaker 1>there's less of that now. I I know that education

0:13:08.360 --> 0:13:12.199
<v Speaker 1>has has has evolved somewhat, and they understand the need

0:13:12.240 --> 0:13:14.520
<v Speaker 1>for big body movements and and and so forth. And

0:13:14.559 --> 0:13:17.120
<v Speaker 1>then they understood it to a certain extent when I

0:13:17.160 --> 0:13:18.800
<v Speaker 1>was a kid. You know, you would still have p

0:13:19.080 --> 0:13:21.920
<v Speaker 1>and whatnot. But yeah, kids need to spin around. You

0:13:21.920 --> 0:13:24.520
<v Speaker 1>you know, when a child spins in circles, it's because

0:13:24.559 --> 0:13:27.199
<v Speaker 1>their body craves it. And the same goes for rolling

0:13:27.200 --> 0:13:31.560
<v Speaker 1>around on the floor, standing on their heads rhythmically swaying. Uh.

0:13:31.600 --> 0:13:33.640
<v Speaker 1>So they need a space to do these things. I

0:13:33.640 --> 0:13:36.319
<v Speaker 1>mean it seems in a way it's information gathering. You're

0:13:36.400 --> 0:13:38.520
<v Speaker 1>you're you're calibrating the system, like you have to do

0:13:38.559 --> 0:13:41.120
<v Speaker 1>with your phone. When the gyroscope or whatever gets you know,

0:13:41.160 --> 0:13:43.840
<v Speaker 1>out of whack, you've got to do some exercises to

0:13:43.840 --> 0:13:48.120
<v Speaker 1>get it back on track. Yeah. So in this extension article,

0:13:48.400 --> 0:13:50.640
<v Speaker 1>the Penn State Extension article that they point out there

0:13:50.640 --> 0:13:53.920
<v Speaker 1>are some very specific ways that spinning helps children. So,

0:13:53.960 --> 0:13:56.000
<v Speaker 1>first of all, it gives them a sense of body awareness,

0:13:56.120 --> 0:14:00.720
<v Speaker 1>establishing their center for improved coordinated movement, a cross both

0:14:00.760 --> 0:14:05.400
<v Speaker 1>sides of their bodies. Uh. It also improves shore sure footedness,

0:14:05.720 --> 0:14:09.400
<v Speaker 1>which is something that might seem counterintuitive sometimes you think, oh,

0:14:09.400 --> 0:14:11.880
<v Speaker 1>this kid's just spinning around in circles. You know, they're

0:14:11.920 --> 0:14:13.760
<v Speaker 1>falling all over the place, they're gonna run into things.

0:14:13.920 --> 0:14:17.360
<v Speaker 1>But it's actually helping them become more short surefooted. Uh.

0:14:17.400 --> 0:14:21.240
<v Speaker 1>It has also been shown to improve concentration in the classroom,

0:14:21.280 --> 0:14:23.440
<v Speaker 1>and they point out that a two thousand five study

0:14:23.520 --> 0:14:27.320
<v Speaker 1>from Choir, Frick and Frick, two different fricks UH found

0:14:27.440 --> 0:14:32.360
<v Speaker 1>that the centrifugal force of many spinning activities and experiences

0:14:32.600 --> 0:14:35.840
<v Speaker 1>activate the fluid filled cavities in the inner ear. And

0:14:35.880 --> 0:14:38.400
<v Speaker 1>these are sensors that help the brain orient the head

0:14:38.520 --> 0:14:43.680
<v Speaker 1>quote which develops grounding and sustaining attention to task. And

0:14:43.720 --> 0:14:46.680
<v Speaker 1>then overall it's a boost to the vestibular system, which

0:14:46.720 --> 0:14:52.080
<v Speaker 1>controls balance, posture, gaze stabilization, and spatial orientation. And and

0:14:52.080 --> 0:14:55.080
<v Speaker 1>there's also apparently a link to impulse control. Fun fact,

0:14:55.200 --> 0:14:58.000
<v Speaker 1>right after I finished researching this section, I went off

0:14:58.000 --> 0:15:00.440
<v Speaker 1>to get some coffee and was immediately attack by my

0:15:00.480 --> 0:15:06.160
<v Speaker 1>son with imaginary lightsabers. And oh yeah, yeah, he has

0:15:06.280 --> 0:15:08.400
<v Speaker 1>he has a pair that he he he really likes

0:15:08.440 --> 0:15:11.080
<v Speaker 1>a sookatano and she has two, uh two lightsabers, so

0:15:11.080 --> 0:15:14.680
<v Speaker 1>he's made two of them out of uh tinfoil um

0:15:15.720 --> 0:15:19.440
<v Speaker 1>cardboard tubes and uh So, anyway, he was attacking me,

0:15:19.480 --> 0:15:21.760
<v Speaker 1>and I observed quite a bit of spinning in his attacks,

0:15:22.320 --> 0:15:24.640
<v Speaker 1>and I tried to do one spin and I nearly

0:15:24.680 --> 0:15:27.240
<v Speaker 1>fell down, uh and then he cut my head off.

0:15:27.560 --> 0:15:31.680
<v Speaker 1>But but but I I looked around and I've noticed

0:15:31.720 --> 0:15:35.560
<v Speaker 1>that that there are actually lightsaber exercise classes for kids

0:15:35.600 --> 0:15:37.760
<v Speaker 1>out there that they can do like virtually, and I'm

0:15:37.840 --> 0:15:40.000
<v Speaker 1>tempted to sign him up for one, especially after learning

0:15:40.040 --> 0:15:43.600
<v Speaker 1>more about the importance of spinning around in circles. That's genius.

0:15:43.760 --> 0:15:47.120
<v Speaker 1>I would have done that as a kid. You have exercise,

0:15:47.160 --> 0:15:50.080
<v Speaker 1>get that energy out. You just pretend to have a lightsaber.

0:15:51.000 --> 0:15:53.960
<v Speaker 1>How has nobody thought of this before? Yeah, yeah, that's brilliant.

0:15:54.000 --> 0:15:57.080
<v Speaker 1>I mean my my only hesitation is, uh, is, what

0:15:57.240 --> 0:15:58.680
<v Speaker 1>what is it going to mean for the lamps and

0:15:58.680 --> 0:16:01.560
<v Speaker 1>the televisions in your house? You gotta have a good

0:16:01.560 --> 0:16:04.280
<v Speaker 1>space for that, I imagine. So let's come back to

0:16:04.720 --> 0:16:07.840
<v Speaker 1>the adults. For for most of us, why does spinning

0:16:07.880 --> 0:16:11.920
<v Speaker 1>around in circles make us dizzy? Why when a yoga

0:16:11.920 --> 0:16:15.080
<v Speaker 1>instructor on a yoga video asked me to spin around

0:16:15.120 --> 0:16:17.120
<v Speaker 1>just like three or five times, why did I have

0:16:17.200 --> 0:16:21.920
<v Speaker 1>to lay down for like ten minutes after that? Yeah?

0:16:21.960 --> 0:16:24.360
<v Speaker 1>This is funny because this is a question that I

0:16:24.440 --> 0:16:29.640
<v Speaker 1>expected to have just a single, totally straightforward physiological answer,

0:16:29.680 --> 0:16:33.440
<v Speaker 1>and instead I found a strange variety of answers to

0:16:33.520 --> 0:16:37.080
<v Speaker 1>this question without a lot of acknowledgement that that there

0:16:37.240 --> 0:16:40.000
<v Speaker 1>was variety in the ways people are answering this, so

0:16:40.040 --> 0:16:42.680
<v Speaker 1>I'm not sure if I've stumbled on something that's actually

0:16:42.680 --> 0:16:47.000
<v Speaker 1>controversial or different uh different sources, or just emphasizing different

0:16:47.040 --> 0:16:51.000
<v Speaker 1>aspects of vertigo induced by spinning. But in any case,

0:16:51.040 --> 0:16:54.080
<v Speaker 1>the answer to this question definitely ended up taking a

0:16:54.120 --> 0:16:56.760
<v Speaker 1>shape that I wouldn't expect. But before we get to

0:16:56.800 --> 0:16:59.600
<v Speaker 1>the direct answer of like why spinning in circles makes

0:16:59.600 --> 0:17:02.880
<v Speaker 1>you dizzy? I think we have to meet a fascinating

0:17:02.920 --> 0:17:05.639
<v Speaker 1>and important element in this discussion. When you just mentioned

0:17:05.640 --> 0:17:10.400
<v Speaker 1>a mintigo, which is the human vestibular system. Uh so interesting.

0:17:10.400 --> 0:17:12.280
<v Speaker 1>Fact number one. We've talked about this on the show

0:17:12.320 --> 0:17:15.280
<v Speaker 1>many times before, but maybe you're new the show. Humans

0:17:15.320 --> 0:17:17.800
<v Speaker 1>actually have way more than five senses. I think it's

0:17:17.800 --> 0:17:20.520
<v Speaker 1>funny when when people end up talking about the five senses.

0:17:20.560 --> 0:17:23.080
<v Speaker 1>I guess you could maybe call them the big five senses.

0:17:23.200 --> 0:17:28.359
<v Speaker 1>They're the most obvious as senses, you know, site, hearing, taste, smell, touch,

0:17:28.480 --> 0:17:32.000
<v Speaker 1>But we have other ways of getting information from the

0:17:32.080 --> 0:17:34.959
<v Speaker 1>outside world and coordinating that within the brain. And one

0:17:35.000 --> 0:17:37.560
<v Speaker 1>of my favorite examples of a lesser known but extremely

0:17:37.600 --> 0:17:41.120
<v Speaker 1>important sense distinct from the big five is appropriate reception.

0:17:41.520 --> 0:17:45.159
<v Speaker 1>It's the sense that informs you where the different parts

0:17:45.280 --> 0:17:47.719
<v Speaker 1>of your body are. So, how is it that you

0:17:47.800 --> 0:17:51.320
<v Speaker 1>can type without looking at the keys? How is it

0:17:51.400 --> 0:17:54.439
<v Speaker 1>that you can close your eyes and you still know

0:17:54.480 --> 0:17:56.800
<v Speaker 1>where your hands are, You know whether they're at your

0:17:56.840 --> 0:18:00.359
<v Speaker 1>sides or over your head, even if you're blindfolded. We

0:18:00.400 --> 0:18:04.680
<v Speaker 1>have a sense that's constantly updating the brain with information

0:18:04.720 --> 0:18:08.520
<v Speaker 1>about the position and orientation of the rest of the body. Yeah,

0:18:08.520 --> 0:18:11.960
<v Speaker 1>that's one that I can't help but feel that it's

0:18:12.080 --> 0:18:15.280
<v Speaker 1>it's so invisible to us because it is so constant,

0:18:15.600 --> 0:18:19.240
<v Speaker 1>it's not as easily disruptible, you know, in the sense

0:18:19.280 --> 0:18:21.800
<v Speaker 1>that we can close our eyes, we can sort of

0:18:21.840 --> 0:18:26.119
<v Speaker 1>stopper our ears and so forth. But but in terms

0:18:26.119 --> 0:18:29.960
<v Speaker 1>of turning off appropriate reception, UM, not so easily done.

0:18:30.160 --> 0:18:32.640
<v Speaker 1>And then also it's just so it's so close to us.

0:18:32.680 --> 0:18:34.280
<v Speaker 1>It's you know, this is very much you can't see

0:18:34.280 --> 0:18:37.720
<v Speaker 1>the forest for the trees situation. Yeah, uh yeah, that

0:18:37.920 --> 0:18:40.200
<v Speaker 1>is very interesting. That's harder to turn that one off

0:18:40.240 --> 0:18:42.480
<v Speaker 1>than it is some of the other senses. But in

0:18:42.520 --> 0:18:44.960
<v Speaker 1>a way, I feel like that's part of the um.

0:18:44.960 --> 0:18:47.800
<v Speaker 1>When people go for sort of like a sense deprivation

0:18:47.920 --> 0:18:51.439
<v Speaker 1>or certain types of meditation that are that try to

0:18:51.680 --> 0:18:56.400
<v Speaker 1>ignore sensory stimuli or just focus on one particular sensory stimuli.

0:18:56.840 --> 0:18:59.840
<v Speaker 1>I think one of the difficult things is ignoring that

0:19:00.200 --> 0:19:02.320
<v Speaker 1>feeling of where your body is, and that I think

0:19:02.359 --> 0:19:06.560
<v Speaker 1>that's one of the important reasons why meditation often requires

0:19:06.600 --> 0:19:08.880
<v Speaker 1>you to be in a position of rest, because it's

0:19:08.880 --> 0:19:11.640
<v Speaker 1>easier to ignore the position of your body if you're

0:19:11.640 --> 0:19:14.680
<v Speaker 1>not really doing anything active with your body. Yeah. Yeah,

0:19:14.680 --> 0:19:16.760
<v Speaker 1>and definitely it's the case with float tanks where if

0:19:16.800 --> 0:19:20.280
<v Speaker 1>it's calibrated correctly, you're you're floating in water that's about

0:19:20.280 --> 0:19:22.960
<v Speaker 1>the same temperature as your own body. And yeah, it's

0:19:22.960 --> 0:19:25.880
<v Speaker 1>it's about sort of losing a sense of of your

0:19:25.880 --> 0:19:34.960
<v Speaker 1>physical self. Yeah, thank But they're all kinds of senses,

0:19:35.000 --> 0:19:38.240
<v Speaker 1>some some bleed more easily into others, or you can

0:19:38.280 --> 0:19:40.080
<v Speaker 1>make the argument that they do, like you can make

0:19:40.160 --> 0:19:44.720
<v Speaker 1>arguments that they're different types of touch sensations, you know,

0:19:44.840 --> 0:19:47.800
<v Speaker 1>feeling of tactile pressure versus feeling of heat. You know,

0:19:48.520 --> 0:19:51.440
<v Speaker 1>you can talk about that. Another interesting one is chronoception,

0:19:52.000 --> 0:19:56.160
<v Speaker 1>the sensation of the passing of time and judgment of duration.

0:19:57.080 --> 0:20:00.320
<v Speaker 1>That actually is a sense of the external world, and

0:20:00.600 --> 0:20:04.119
<v Speaker 1>there are types of nervous system conditions that can affect

0:20:04.160 --> 0:20:07.520
<v Speaker 1>your chronoception. In fact, not just conditions as in diseases,

0:20:07.560 --> 0:20:11.960
<v Speaker 1>but chronoception changes as you age, for example. But here's

0:20:11.960 --> 0:20:16.199
<v Speaker 1>where things get even weirder. The ear is not only

0:20:16.280 --> 0:20:20.119
<v Speaker 1>responsible for the sense of hearing. There are other senses

0:20:20.280 --> 0:20:24.399
<v Speaker 1>that are located within the ear. Organs in the human

0:20:24.520 --> 0:20:30.359
<v Speaker 1>inner ear are also responsible for one major component of equilibrioception,

0:20:30.800 --> 0:20:34.879
<v Speaker 1>or the sense of balance, and these organs together in

0:20:34.920 --> 0:20:38.400
<v Speaker 1>the inner ear, are known as the vestibular system. If

0:20:38.440 --> 0:20:41.240
<v Speaker 1>you get a chance, you should look up an illustration

0:20:41.320 --> 0:20:45.000
<v Speaker 1>of the human vestibular system. It is like a chambered

0:20:45.080 --> 0:20:49.760
<v Speaker 1>nautilus or an alien squid snail. It's got one section

0:20:50.240 --> 0:20:54.800
<v Speaker 1>which curls, and this is less related to the equilibrioception.

0:20:54.840 --> 0:20:59.080
<v Speaker 1>That's the cochlea, the swirling snail shell part. But then

0:20:59.119 --> 0:21:01.320
<v Speaker 1>coming out of the head of the swirling snail shell

0:21:01.359 --> 0:21:06.560
<v Speaker 1>of the cochlea, there are these strange tentacle things, these

0:21:06.720 --> 0:21:12.440
<v Speaker 1>three looping canals, each one like a semicircular tube snaking

0:21:12.480 --> 0:21:15.480
<v Speaker 1>back on itself. And then you've also got these two

0:21:15.520 --> 0:21:20.800
<v Speaker 1>tiny organs below the position down below the bases of

0:21:20.840 --> 0:21:24.640
<v Speaker 1>these three semicircular canals. These two tiny organs are known

0:21:24.680 --> 0:21:28.560
<v Speaker 1>as the utricle and the saccule, and together the utricle

0:21:28.600 --> 0:21:31.879
<v Speaker 1>and the saccule are what's known as the odo lith organs,

0:21:31.920 --> 0:21:37.200
<v Speaker 1>which literally means ear stones or ear rocks uh. Also

0:21:37.320 --> 0:21:40.359
<v Speaker 1>in the realm of cool names. This whole complex of

0:21:40.480 --> 0:21:45.040
<v Speaker 1>organs here is known as the labyrinth or the vestibular labyrinth,

0:21:45.160 --> 0:21:50.119
<v Speaker 1>the bony labyrinth. You have one labyrinth in each ear. Now,

0:21:50.160 --> 0:21:52.960
<v Speaker 1>if you go back to these hammer loop snake tentacles,

0:21:53.200 --> 0:21:56.480
<v Speaker 1>the three semicircular canals, which each sort of loop in

0:21:56.520 --> 0:22:01.920
<v Speaker 1>a different orientation, these things are hollow, partially filled with fluid,

0:22:02.440 --> 0:22:05.720
<v Speaker 1>fluid and gel uh the gel known as cupula and

0:22:05.760 --> 0:22:10.000
<v Speaker 1>the fluid known as indo lymph. And they include interior

0:22:10.080 --> 0:22:14.119
<v Speaker 1>spaces with these little hair cells, these little follicles that

0:22:14.160 --> 0:22:17.679
<v Speaker 1>are sensitive and connected to nerve tissue that runs out

0:22:17.720 --> 0:22:20.320
<v Speaker 1>to the rest of the brain. So when you move

0:22:20.440 --> 0:22:22.760
<v Speaker 1>your head, so you turn your head to the right

0:22:22.880 --> 0:22:25.920
<v Speaker 1>or the left, or you tilt your head from side

0:22:25.960 --> 0:22:28.480
<v Speaker 1>to side, or you tilt your head forward or back.

0:22:29.440 --> 0:22:33.320
<v Speaker 1>Inside these loops, the fluid moves around in the canals

0:22:34.119 --> 0:22:36.960
<v Speaker 1>in the inner spaces and it comes into contact with

0:22:37.040 --> 0:22:40.800
<v Speaker 1>the different hair cells, and the hair cells since the

0:22:40.840 --> 0:22:43.800
<v Speaker 1>movement of this fluid, and this can give you information

0:22:43.840 --> 0:22:46.800
<v Speaker 1>about the orientation of your head. And the hair cells

0:22:46.840 --> 0:22:49.920
<v Speaker 1>are connected to the brain via a nerve fiber called

0:22:49.960 --> 0:22:54.280
<v Speaker 1>the vestibular nerve, and then the brain interprets the stimulation

0:22:54.400 --> 0:22:58.359
<v Speaker 1>data from those hair cells into sense information about the

0:22:58.359 --> 0:23:00.520
<v Speaker 1>orientation of the head. And the main part of the

0:23:00.560 --> 0:23:04.520
<v Speaker 1>brain involved in processing coordinating information about balance and movement

0:23:05.000 --> 0:23:07.600
<v Speaker 1>is the cerebellum, which, if you've seen an illustration of

0:23:07.600 --> 0:23:10.480
<v Speaker 1>the brain, is that little meaty lump position on the

0:23:10.560 --> 0:23:12.920
<v Speaker 1>rear underside of the brain is kind of the brains,

0:23:13.000 --> 0:23:15.240
<v Speaker 1>but it's sort of right at the top of the

0:23:15.520 --> 0:23:19.840
<v Speaker 1>spinal column. So everybody feel your brain and and and

0:23:20.000 --> 0:23:22.840
<v Speaker 1>you'll you'll feel it. Get your get your hand right

0:23:22.840 --> 0:23:28.080
<v Speaker 1>in there. Now. About these canals in the labyrinth, one

0:23:28.119 --> 0:23:30.600
<v Speaker 1>thing that I think is really cool is that, Okay,

0:23:30.600 --> 0:23:33.800
<v Speaker 1>so there's one canal that is devoted to sensing the

0:23:33.840 --> 0:23:37.879
<v Speaker 1>tilting of the head forward or backward. There is another

0:23:37.920 --> 0:23:41.160
<v Speaker 1>canal that's devoted to sensing the turning of the head

0:23:41.359 --> 0:23:45.159
<v Speaker 1>from side to side, and then there's another that is

0:23:45.760 --> 0:23:49.520
<v Speaker 1>dedicated to sensing the tilting of the head toward each shoulder.

0:23:50.000 --> 0:23:52.800
<v Speaker 1>And so what you can realize is that these three

0:23:52.800 --> 0:23:57.479
<v Speaker 1>canals represent the three different dimensions of space. So if

0:23:57.520 --> 0:24:00.920
<v Speaker 1>I'm understanding correctly, I think I am. These three canals

0:24:01.000 --> 0:24:06.160
<v Speaker 1>also correspond to the three attitude variables of aircraft and submarines,

0:24:06.240 --> 0:24:10.640
<v Speaker 1>which are role, pitch, and yaw. So what mammal heads

0:24:11.000 --> 0:24:14.000
<v Speaker 1>and B fifty twos have in common is that they

0:24:14.040 --> 0:24:16.240
<v Speaker 1>live in three dimensional space. And if you're going to

0:24:16.359 --> 0:24:20.200
<v Speaker 1>adjust movements through three dimensional space, and since uh all

0:24:20.240 --> 0:24:22.760
<v Speaker 1>the different ways that you can change your attitude or

0:24:22.840 --> 0:24:25.920
<v Speaker 1>change the vector along which you're moving, then you need

0:24:25.960 --> 0:24:30.360
<v Speaker 1>a sensor for one of each of these three dimensions. Interesting, Rob,

0:24:30.400 --> 0:24:33.040
<v Speaker 1>I know you're a big fan of of airplanes. Do

0:24:33.040 --> 0:24:35.240
<v Speaker 1>do you ever think about your body in terms of role,

0:24:35.320 --> 0:24:38.280
<v Speaker 1>pitch and y'all? Uh No, you know, I don't think

0:24:38.320 --> 0:24:40.439
<v Speaker 1>I have, though, it's it's certainly now that you may

0:24:40.520 --> 0:24:42.240
<v Speaker 1>bring it up here. It's it's making me think back

0:24:42.280 --> 0:24:44.800
<v Speaker 1>to like flight simulator games, you know, where you you

0:24:44.920 --> 0:24:48.480
<v Speaker 1>definitely have visual displays of role, pitch and y'all, But

0:24:48.560 --> 0:24:50.760
<v Speaker 1>we don't think about that in terms of our own

0:24:51.080 --> 0:24:54.480
<v Speaker 1>personal experience of physical reality. I mean, we are babies

0:24:54.480 --> 0:24:57.560
<v Speaker 1>of the three D space, so it governs man and

0:24:57.680 --> 0:25:02.480
<v Speaker 1>machine alike. Now, earlier I also mentioned these otolith organs.

0:25:02.520 --> 0:25:05.320
<v Speaker 1>They also have sensitive hair cells, but the sensitive hair

0:25:05.359 --> 0:25:10.640
<v Speaker 1>cells here are arrayed with strange mineral formations made out

0:25:10.640 --> 0:25:15.280
<v Speaker 1>of calcium carbonate again, hence otolith the name ear stones

0:25:15.480 --> 0:25:19.560
<v Speaker 1>or ear rocks, and calcium carbonate is the same compound

0:25:19.600 --> 0:25:22.080
<v Speaker 1>that makes up the bulk of the shells of sea

0:25:22.119 --> 0:25:26.959
<v Speaker 1>creatures and pearls, but also chalk. It's a very widespread,

0:25:27.040 --> 0:25:31.120
<v Speaker 1>widely found mineral. Uh. It's used in tons of human technology.

0:25:31.160 --> 0:25:35.160
<v Speaker 1>It's used in for example, agricultural lime, uh to make

0:25:35.240 --> 0:25:38.800
<v Speaker 1>chalk for a blackboard, all kinds of things. But I

0:25:38.920 --> 0:25:42.480
<v Speaker 1>also found one totally off topic connection that I couldn't

0:25:42.520 --> 0:25:45.000
<v Speaker 1>bear not to mention, and that is that there's one

0:25:45.119 --> 0:25:49.560
<v Speaker 1>common stable crystal form of calcium carbonate known as calcite,

0:25:49.880 --> 0:25:52.439
<v Speaker 1>and there is one very strange and beautiful form of

0:25:52.520 --> 0:25:57.880
<v Speaker 1>calcite known as iceland spar, which is a transparent rock.

0:25:58.480 --> 0:26:01.680
<v Speaker 1>It's a mineral that is clear like ice or like

0:26:02.240 --> 0:26:07.520
<v Speaker 1>slightly you know, uh, slightly jacked up glass. And it's

0:26:07.520 --> 0:26:12.280
<v Speaker 1>been speculated that this transparent crystal Iceland. Spar was actually

0:26:12.320 --> 0:26:16.240
<v Speaker 1>the historical reference point for an object that is recorded

0:26:16.240 --> 0:26:20.000
<v Speaker 1>in medieval histories known as the sunstone, and their references

0:26:20.040 --> 0:26:23.480
<v Speaker 1>to this in medieval Norse texts. I think we're talking

0:26:23.480 --> 0:26:28.360
<v Speaker 1>about Iceland because this crystal can be used to detect

0:26:28.440 --> 0:26:31.359
<v Speaker 1>the direction of the sun when you're sailing in the

0:26:31.480 --> 0:26:34.919
<v Speaker 1>Arctic and the sun is totally obscured by clouds, so

0:26:34.960 --> 0:26:37.040
<v Speaker 1>you're out, it's a gray day. You can't see where

0:26:37.040 --> 0:26:38.639
<v Speaker 1>the sun is at all, but you need to know

0:26:38.680 --> 0:26:40.879
<v Speaker 1>where the sun is in order to navigate your boat.

0:26:41.440 --> 0:26:45.480
<v Speaker 1>You can apparently use a chunk of this transparent crystal

0:26:45.920 --> 0:26:49.040
<v Speaker 1>to find the location of the sun by by the

0:26:49.040 --> 0:26:52.080
<v Speaker 1>crystal's effect on the polarized light coming from the sun

0:26:52.080 --> 0:26:55.160
<v Speaker 1>through the clouds. Oh fascinating, Yeah, because I think we've

0:26:55.160 --> 0:26:58.320
<v Speaker 1>all been saying out on the beach perhaps on one

0:26:58.359 --> 0:27:00.399
<v Speaker 1>of these days where it's overcast, you know the sun's

0:27:00.480 --> 0:27:04.000
<v Speaker 1>up there, but you're not exactly sure what position it's in. Yeah.

0:27:04.000 --> 0:27:08.000
<v Speaker 1>So calcium carbonate itself is just a very versatile and

0:27:08.040 --> 0:27:11.800
<v Speaker 1>mini splendored mineral uh on on its own. In fact,

0:27:12.200 --> 0:27:14.800
<v Speaker 1>it's the subject of a of a great classic talk

0:27:14.840 --> 0:27:17.919
<v Speaker 1>in science, the talk about a piece of chalk that

0:27:18.000 --> 0:27:21.399
<v Speaker 1>was given by by T. H. Huxley. But but I

0:27:21.640 --> 0:27:24.000
<v Speaker 1>also included a picture for you to look at here, rob,

0:27:24.080 --> 0:27:27.159
<v Speaker 1>which is a scanning electron micrograph that I found of

0:27:27.280 --> 0:27:32.560
<v Speaker 1>calcium carbonate crystals from the from the utricle of a cat.

0:27:33.240 --> 0:27:36.720
<v Speaker 1>And so it's showing these tiny crystals. Each one is

0:27:36.800 --> 0:27:42.159
<v Speaker 1>microscopically small, but yeah, they these rocks. Basically, these crystals

0:27:42.520 --> 0:27:45.520
<v Speaker 1>play a role in the physiology and function of the

0:27:45.560 --> 0:27:48.960
<v Speaker 1>inner ear. Now, what these odo lith organs do that's

0:27:49.040 --> 0:27:55.440
<v Speaker 1>different from the semicircular canals is that the odoliths detect

0:27:55.840 --> 0:28:00.439
<v Speaker 1>vectors of acceleration horizontal and vertical. And so this is

0:28:00.440 --> 0:28:03.600
<v Speaker 1>why you can feel whether you are going up or

0:28:03.680 --> 0:28:06.600
<v Speaker 1>down in an elevator even though you can't see out

0:28:06.600 --> 0:28:09.080
<v Speaker 1>of it. So in an elevator, you're not changing the

0:28:09.119 --> 0:28:11.679
<v Speaker 1>orientation of your head. You know, you're not bending it

0:28:11.720 --> 0:28:15.719
<v Speaker 1>forward or whatever. The head is staying fixed relative to

0:28:15.720 --> 0:28:18.719
<v Speaker 1>to gravity basically, but you are moving, You're going up

0:28:18.720 --> 0:28:22.240
<v Speaker 1>and down, and so the saccula in there can detect that.

0:28:22.720 --> 0:28:25.760
<v Speaker 1>So we're left with this really strange fact inside your

0:28:25.800 --> 0:28:29.359
<v Speaker 1>ears you have tiny organs lined with crystals of the

0:28:29.400 --> 0:28:33.400
<v Speaker 1>material that makes oyster shells and pearls, and they detect

0:28:33.440 --> 0:28:36.879
<v Speaker 1>which directions you're accelerating in even if you can't see,

0:28:37.359 --> 0:28:41.120
<v Speaker 1>which I thought was just a beautiful connection. The crystalline

0:28:41.200 --> 0:28:45.920
<v Speaker 1>new a genus of the inner ear. Oh, that'd be great.

0:28:45.920 --> 0:28:47.600
<v Speaker 1>I've never heard of that one. And people who like

0:28:47.880 --> 0:28:51.240
<v Speaker 1>give their friends crystals for like certain healing powers or something.

0:28:51.280 --> 0:28:53.400
<v Speaker 1>What are the crystals of the human inner ear do

0:28:53.880 --> 0:28:56.160
<v Speaker 1>if you like slay your enemies and take the crystals

0:28:56.160 --> 0:28:58.760
<v Speaker 1>out of their ears. Oh, man, that would be a

0:28:58.760 --> 0:29:01.600
<v Speaker 1>great Uh. That would be a great function of some

0:29:01.640 --> 0:29:04.720
<v Speaker 1>sort of like alien invasion story where the alien has

0:29:04.760 --> 0:29:08.520
<v Speaker 1>to feed on on on these crystals, you know. I

0:29:08.560 --> 0:29:10.600
<v Speaker 1>was also I didn't get super deep into this because

0:29:10.640 --> 0:29:12.240
<v Speaker 1>it's kind of a tangent, But I was also just

0:29:12.320 --> 0:29:17.719
<v Speaker 1>looking at studies indicating the many faces of of a

0:29:17.720 --> 0:29:20.000
<v Speaker 1>healthy odo lith and what it does for the body.

0:29:20.120 --> 0:29:22.240
<v Speaker 1>For example, one study I was looking at mission the

0:29:22.280 --> 0:29:27.240
<v Speaker 1>possibility that auto liths are possibly important for the formation

0:29:27.320 --> 0:29:31.600
<v Speaker 1>of spatial memories, and that the degradation of the effectiveness

0:29:31.600 --> 0:29:35.800
<v Speaker 1>of the odo lith oysters may account for the decline

0:29:35.840 --> 0:29:38.760
<v Speaker 1>of spatial memory with age. So as you get older

0:29:39.120 --> 0:29:41.760
<v Speaker 1>and the oyster shells in your ears, the odo liths

0:29:41.840 --> 0:29:43.920
<v Speaker 1>become a little bit less good at what they do,

0:29:44.400 --> 0:29:48.000
<v Speaker 1>and this actually could be related to people being less

0:29:48.000 --> 0:29:51.640
<v Speaker 1>accurate at forming spatial memories as they get older. Interesting, Yeah,

0:29:51.680 --> 0:29:54.760
<v Speaker 1>because there's certainly there's the brain itself, but the brain

0:29:54.840 --> 0:29:58.160
<v Speaker 1>has to make use of sensory information. Yeah, and this

0:29:58.280 --> 0:30:01.400
<v Speaker 1>ties into stuff we've talked about before in how um.

0:30:01.880 --> 0:30:06.560
<v Speaker 1>In some ways the brain remembers spaces by simulating movement

0:30:06.720 --> 0:30:10.160
<v Speaker 1>but through them. But the vestibular system is also, it

0:30:10.160 --> 0:30:13.640
<v Speaker 1>should be mentioned, a team player. So these canals and

0:30:13.720 --> 0:30:17.080
<v Speaker 1>the odoliths, they don't have much use alone, but rather

0:30:17.120 --> 0:30:20.840
<v Speaker 1>they coordinate information in the brain with other sensory systems,

0:30:20.840 --> 0:30:24.960
<v Speaker 1>such as the visual system appropriate receptive faculties to form

0:30:25.000 --> 0:30:29.560
<v Speaker 1>a comprehensive movement detection and feedback and adjustment system. And

0:30:29.600 --> 0:30:32.000
<v Speaker 1>there's all kinds of stuff that has to happen like uh,

0:30:32.160 --> 0:30:37.680
<v Speaker 1>For example, your visual system adjusts itself to account for

0:30:38.160 --> 0:30:41.200
<v Speaker 1>changes in the movement and orientation of your body that

0:30:41.240 --> 0:30:45.400
<v Speaker 1>are sensed by the vestibular system, and so the eyes

0:30:45.440 --> 0:30:48.560
<v Speaker 1>can see your orientation with respect to the environment. The

0:30:48.680 --> 0:30:52.239
<v Speaker 1>vestibular system, since it is the head's orientation, movement with

0:30:52.280 --> 0:30:56.640
<v Speaker 1>respect to gravity and to inertia. The appropriate receptive system

0:30:56.720 --> 0:30:59.040
<v Speaker 1>feels where the rest of the body is in relation

0:30:59.080 --> 0:31:01.240
<v Speaker 1>to the head. These systems, I'll kind of have to

0:31:01.280 --> 0:31:04.480
<v Speaker 1>work together to to give you a picture of here's

0:31:04.480 --> 0:31:07.240
<v Speaker 1>where your body is and how it's moving. And so

0:31:07.280 --> 0:31:12.000
<v Speaker 1>when we come back to the question of dizziness and vertigo, uh,

0:31:12.440 --> 0:31:16.400
<v Speaker 1>I guess that's addressing what happens when these systems get

0:31:16.440 --> 0:31:19.000
<v Speaker 1>out of synchronization with each other, or when one of

0:31:19.000 --> 0:31:23.280
<v Speaker 1>the systems begins to fail or have problems. And so

0:31:23.600 --> 0:31:26.400
<v Speaker 1>to ask the question like what is dizziness, that's also

0:31:26.480 --> 0:31:28.920
<v Speaker 1>kind of an interesting question because there are a range

0:31:28.920 --> 0:31:33.120
<v Speaker 1>of different sensations that people call dizziness that they're all

0:31:33.160 --> 0:31:36.440
<v Speaker 1>kind of associated with one another. So, for example, I

0:31:36.520 --> 0:31:41.840
<v Speaker 1>was reading a paper called Dizziness and Vertigo Syndromes Viewed

0:31:41.840 --> 0:31:45.560
<v Speaker 1>with a Historical Eye by Dorin Hoopert and Thomas Brandt

0:31:45.560 --> 0:31:49.680
<v Speaker 1>in the Journal of Neurology published in and they cite

0:31:50.080 --> 0:31:55.080
<v Speaker 1>a definition of dizziness and vertigo from the International Barani

0:31:55.240 --> 0:31:59.280
<v Speaker 1>Society of neuro Autology, and they say, quote, vertigo is

0:31:59.320 --> 0:32:02.640
<v Speaker 1>the sensation of self motion when no self motion is

0:32:02.680 --> 0:32:07.360
<v Speaker 1>occurring dizziness is the sensation of disturbed or impaired spatial

0:32:07.440 --> 0:32:12.120
<v Speaker 1>orientation without a false or distorted sense of motion. And

0:32:12.320 --> 0:32:16.960
<v Speaker 1>imbalance or unsteadiness is the feeling of being unstable while sitting, standing,

0:32:17.040 --> 0:32:21.520
<v Speaker 1>or walking without a particular directional preference. But I gotta

0:32:21.520 --> 0:32:24.680
<v Speaker 1>say so, so that may be applied at the clinical

0:32:24.760 --> 0:32:27.760
<v Speaker 1>level or in the in the literature, but it's clear

0:32:27.800 --> 0:32:30.560
<v Speaker 1>that when people talk about dizziness, a lot of times

0:32:30.560 --> 0:32:33.719
<v Speaker 1>what they're talking about here is vertigo. Right, It is

0:32:33.760 --> 0:32:37.800
<v Speaker 1>the sense that you are spinning or moving when you're not.

0:32:38.080 --> 0:32:40.640
<v Speaker 1>And though a lot of sources I was reading said

0:32:41.040 --> 0:32:43.640
<v Speaker 1>the sense that you're moving when you're not, to be pedantic,

0:32:43.680 --> 0:32:45.840
<v Speaker 1>I think technically what you'd really have to say is

0:32:46.120 --> 0:32:48.880
<v Speaker 1>it's the sense that you're accelerating, not the sense that

0:32:48.920 --> 0:32:51.640
<v Speaker 1>you're moving, because once you're moving at a constant speed

0:32:51.680 --> 0:32:56.280
<v Speaker 1>and direction, movement is imperceptible. It's only changes in speed

0:32:56.360 --> 0:32:59.000
<v Speaker 1>or direction that that are sensed in the inner ear.

0:32:59.400 --> 0:33:00.840
<v Speaker 1>But I think you have to correct about how we

0:33:00.880 --> 0:33:03.320
<v Speaker 1>just we we tend to refer to things as dizziness

0:33:03.400 --> 0:33:06.840
<v Speaker 1>or feeling dizzy, even if we're talking about vertico, etcetera. Right, So,

0:33:06.880 --> 0:33:09.120
<v Speaker 1>I think a more you know, street level definition that

0:33:09.120 --> 0:33:12.200
<v Speaker 1>people would use I found on the Mayo Clinic website. Uh.

0:33:12.640 --> 0:33:14.840
<v Speaker 1>They say, dizziness is a term used to describe a

0:33:14.960 --> 0:33:19.480
<v Speaker 1>range of sensations such as feeling faint, woozy, weak, or unsteady.

0:33:19.520 --> 0:33:22.400
<v Speaker 1>Dizziness that creates the false sense that you or your

0:33:22.440 --> 0:33:26.280
<v Speaker 1>surroundings are spinning or moving is called vertigo. Uh. So

0:33:26.800 --> 0:33:29.800
<v Speaker 1>these terms might be used differently in the literature sometimes,

0:33:29.880 --> 0:33:32.719
<v Speaker 1>but I think we can basically say, you know, dizziness vertigo.

0:33:32.800 --> 0:33:34.800
<v Speaker 1>We're we're sort of talking about the same thing and

0:33:34.920 --> 0:33:38.360
<v Speaker 1>related things. Now, that same paper I just mentioned, the

0:33:38.360 --> 0:33:41.000
<v Speaker 1>one by Dorian Hoopert and Thomas Brandt in the Journal

0:33:41.000 --> 0:33:45.880
<v Speaker 1>of Neurology, Uh, it has a section where it looked into,

0:33:46.320 --> 0:33:51.120
<v Speaker 1>uh the etymology of terms used for dizziness, which which

0:33:51.160 --> 0:33:55.120
<v Speaker 1>I thought was actually extremely interesting and revealing. So in

0:33:55.160 --> 0:33:58.400
<v Speaker 1>this part of their paper they say, uh quote Latin

0:33:58.560 --> 0:34:02.160
<v Speaker 1>for example, has it lee two source words to describe

0:34:02.160 --> 0:34:07.960
<v Speaker 1>the condition vertigo. Vertigo in Latin refers to turning, spinning, rotating,

0:34:08.280 --> 0:34:11.480
<v Speaker 1>and is derived from the verb vertere, meaning to turn.

0:34:12.160 --> 0:34:18.400
<v Speaker 1>Another word, caligo means darkening of the eyes, funereal crape,

0:34:18.440 --> 0:34:20.360
<v Speaker 1>and I think that's a cloth that would be placed

0:34:20.400 --> 0:34:25.040
<v Speaker 1>over a over a body at a funeral and and dizziness,

0:34:25.040 --> 0:34:28.080
<v Speaker 1>So strange, darkening of the eyes, the cloth over the

0:34:28.320 --> 0:34:31.879
<v Speaker 1>over the body at a funeral, and dizziness. And they

0:34:31.880 --> 0:34:35.400
<v Speaker 1>say that this word caligo and not the word vertigo,

0:34:35.560 --> 0:34:40.120
<v Speaker 1>appears in ancient text passages referring to heights and the

0:34:40.200 --> 0:34:42.920
<v Speaker 1>symptoms of a fear of heights. So you know, often

0:34:42.920 --> 0:34:45.360
<v Speaker 1>people will feel vertigo or dizziness if they've got a

0:34:45.360 --> 0:34:47.000
<v Speaker 1>fear of heights and they you know, look off of

0:34:47.040 --> 0:34:50.040
<v Speaker 1>a cliff for something. But they say that collego was

0:34:50.160 --> 0:34:54.560
<v Speaker 1>also used quote metaphorically for dizziness arising from feelings of

0:34:54.680 --> 0:34:59.480
<v Speaker 1>exultation or for being overwhelmed and losing one's grip on reality.

0:35:00.000 --> 0:35:04.359
<v Speaker 1>For example, Tacitus in his work History A describes how

0:35:04.480 --> 0:35:09.359
<v Speaker 1>Vespasian wanted to become an emperor himself after Nero's suicide.

0:35:09.719 --> 0:35:12.360
<v Speaker 1>He is said to have felt dizzy when the soldiers

0:35:12.400 --> 0:35:17.799
<v Speaker 1>addressed him as emperor and used other high ranking titles. Interesting.

0:35:18.040 --> 0:35:20.279
<v Speaker 1>But then this next piece of etymology I thought was

0:35:20.320 --> 0:35:24.560
<v Speaker 1>also really interesting. They say the word giddy is believed

0:35:24.600 --> 0:35:27.880
<v Speaker 1>to be derived from the Old English word giddig, meaning

0:35:27.960 --> 0:35:32.920
<v Speaker 1>insane or literally possessed by a god. The Oxford English

0:35:32.920 --> 0:35:36.239
<v Speaker 1>Dictionary defines the word dizzy as having or involving a

0:35:36.280 --> 0:35:40.080
<v Speaker 1>sensation of spinning around and losing one's balance. It is

0:35:40.080 --> 0:35:44.600
<v Speaker 1>said to originate from the Old English word disig, meaning foolish,

0:35:44.680 --> 0:35:46.960
<v Speaker 1>and is thought to be related to the Low German

0:35:47.040 --> 0:35:51.239
<v Speaker 1>do sig, meaning giddy, and the old High German tusig,

0:35:51.280 --> 0:35:55.719
<v Speaker 1>which relates, which translates as foolish or weak. So really

0:35:55.760 --> 0:36:01.120
<v Speaker 1>interesting this this ancient um historical association between insanity and

0:36:01.160 --> 0:36:04.920
<v Speaker 1>being possessed by a god with the with the feeling

0:36:04.960 --> 0:36:10.360
<v Speaker 1>of dizziness. But okay, anyway to look at the question

0:36:10.400 --> 0:36:12.439
<v Speaker 1>of what's actually happening in the body when you spin

0:36:12.520 --> 0:36:16.319
<v Speaker 1>around in circles and become dizzy? Uh So, first of all,

0:36:16.360 --> 0:36:18.280
<v Speaker 1>I have to say I could not find a single

0:36:18.320 --> 0:36:23.360
<v Speaker 1>authoritative scientific paper that really looks directly at this question.

0:36:23.400 --> 0:36:27.440
<v Speaker 1>There are some studies that, uh look at dizziness from

0:36:27.600 --> 0:36:29.600
<v Speaker 1>a question of like things that can be done to

0:36:29.680 --> 0:36:32.120
<v Speaker 1>alleviate it. But if there's a paper that just looks

0:36:32.160 --> 0:36:35.000
<v Speaker 1>at what causes dizziness and spinning, I was not able

0:36:35.040 --> 0:36:37.360
<v Speaker 1>to find that. Yet, maybe maybe it's out there somewhere

0:36:37.360 --> 0:36:39.439
<v Speaker 1>and somebody can find it and send it our way.

0:36:39.880 --> 0:36:43.360
<v Speaker 1>I did find a number of articles on popular scientific websites,

0:36:43.440 --> 0:36:47.759
<v Speaker 1>but again these articles were somewhat in disagreement with each other,

0:36:47.840 --> 0:36:52.880
<v Speaker 1>without any acknowledgement that they were citing different explanations. So

0:36:52.960 --> 0:36:55.080
<v Speaker 1>one example that I found in a number of articles

0:36:55.520 --> 0:36:58.839
<v Speaker 1>had to do with the effects of inertia on the

0:36:58.920 --> 0:37:01.640
<v Speaker 1>fluid in the can owls in the inner ear. Now,

0:37:01.680 --> 0:37:03.480
<v Speaker 1>this is an article. This is from an article on

0:37:03.560 --> 0:37:07.760
<v Speaker 1>Live Science by Natalie Wolkover, and the author here writes

0:37:07.840 --> 0:37:11.160
<v Speaker 1>that quote when you spin in a circle, inertia initially

0:37:11.200 --> 0:37:14.759
<v Speaker 1>causes the indo lymph. Remember that's the fluid in the

0:37:14.760 --> 0:37:19.000
<v Speaker 1>inner ears that moves around to stimulate those hair cells,

0:37:19.040 --> 0:37:21.880
<v Speaker 1>and that allows your body to detect orientation of the

0:37:21.880 --> 0:37:26.480
<v Speaker 1>head and motion. Uh. She says, Inertia initially causes the

0:37:26.560 --> 0:37:30.359
<v Speaker 1>indo lymph to slosh in the direction opposite of your

0:37:30.360 --> 0:37:34.640
<v Speaker 1>head's motion. It resists the movement of your head dragging

0:37:34.680 --> 0:37:38.799
<v Speaker 1>the cupula. And again that's the slower moving gel that's

0:37:38.800 --> 0:37:42.480
<v Speaker 1>in there backwards with it and thus causing the sensory

0:37:42.480 --> 0:37:46.120
<v Speaker 1>hair suspended inside the cupula to bend against the direction

0:37:46.200 --> 0:37:49.960
<v Speaker 1>in which you're spinning. However, within moments, the indo lymph

0:37:50.040 --> 0:37:53.600
<v Speaker 1>and thus the more gelatinous cupula, adjust to the movement

0:37:53.600 --> 0:37:56.600
<v Speaker 1>of your head and start going with the flow. This

0:37:56.680 --> 0:37:59.239
<v Speaker 1>causes the hair cells to straighten, and your brain no

0:37:59.320 --> 0:38:02.879
<v Speaker 1>longer receives the message that you're spinning. Your perception has

0:38:02.920 --> 0:38:06.239
<v Speaker 1>become normalized, the rotation of your head, giving you the

0:38:06.280 --> 0:38:08.920
<v Speaker 1>sense that you are still and the world is rotating

0:38:08.960 --> 0:38:12.120
<v Speaker 1>around you. Okay, So that would sort of pair up

0:38:12.160 --> 0:38:15.120
<v Speaker 1>with the understanding of dizziness that it is the sensation

0:38:15.200 --> 0:38:19.200
<v Speaker 1>of motion even when you are not moving right, Like,

0:38:19.239 --> 0:38:22.120
<v Speaker 1>I'm no longer spinning around in circles. I've stopped, but

0:38:22.200 --> 0:38:25.360
<v Speaker 1>I feel like I'm spinning around in circles and therefore

0:38:25.400 --> 0:38:27.600
<v Speaker 1>I have to lay down. Yeah, and from a first

0:38:27.600 --> 0:38:29.960
<v Speaker 1>person perspective, I would say that is part of the

0:38:30.000 --> 0:38:33.600
<v Speaker 1>sensation of dizziness. Uh, though dizziness might also be more

0:38:33.680 --> 0:38:36.319
<v Speaker 1>than that. Um. But but of course, then when you

0:38:36.360 --> 0:38:39.799
<v Speaker 1>stop spinning wulkover rights, you have halted the rotation of

0:38:39.840 --> 0:38:44.400
<v Speaker 1>your semicircular canals, and because of inertia, the indo lymph

0:38:44.560 --> 0:38:46.600
<v Speaker 1>keeps spinning, and so it's kind of the way that

0:38:46.640 --> 0:38:48.960
<v Speaker 1>you know you can spin a bucket around. But then

0:38:49.000 --> 0:38:51.080
<v Speaker 1>if you stop spinning the bucket, the water in the

0:38:51.120 --> 0:38:54.919
<v Speaker 1>bucket will keep spinning, it will keep slashing um, she writes.

0:38:54.960 --> 0:38:58.600
<v Speaker 1>Because of inertia, the indo lymph keeps spinning, resisting change.

0:38:58.680 --> 0:39:02.440
<v Speaker 1>Yet again, as fluid continues to move, it once again

0:39:02.560 --> 0:39:06.080
<v Speaker 1>deflects the cupula, this time in the direction in which

0:39:06.120 --> 0:39:09.400
<v Speaker 1>you were spinning moments before. And as the using cupula

0:39:09.520 --> 0:39:12.879
<v Speaker 1>bends those hair cells, a signal of movement is transmitted

0:39:12.920 --> 0:39:15.480
<v Speaker 1>to the brain you since you are moving but you're not,

0:39:15.880 --> 0:39:19.600
<v Speaker 1>And that's dizziness. Okay, So you know, based on the

0:39:19.600 --> 0:39:22.319
<v Speaker 1>other things I've been reading, that explanation would make some

0:39:22.400 --> 0:39:24.960
<v Speaker 1>amount of sense. It's saying that the effects of inertia

0:39:25.040 --> 0:39:27.279
<v Speaker 1>on the fluid in the canals in the inner ear

0:39:27.760 --> 0:39:31.839
<v Speaker 1>after you stop spinning, causes some kind of you know, uh,

0:39:32.360 --> 0:39:36.160
<v Speaker 1>causes some false signals in the brain. And this is disorienting,

0:39:36.560 --> 0:39:39.280
<v Speaker 1>especially when paired with your other senses, like your eyes

0:39:39.320 --> 0:39:41.520
<v Speaker 1>and everything are telling you you're not spinning anymore, but

0:39:41.560 --> 0:39:45.080
<v Speaker 1>your inner ear feels like you are. Yeah, the slough

0:39:45.160 --> 0:39:47.680
<v Speaker 1>bladders in our in our head and are all sloshed

0:39:47.760 --> 0:39:50.759
<v Speaker 1>up basically, and this is mirrored in another article I

0:39:50.800 --> 0:39:53.520
<v Speaker 1>was I found on the subject, one in Popular Science

0:39:53.600 --> 0:39:57.879
<v Speaker 1>by Claire Muldarelli, again referencing the movement of the indo

0:39:57.960 --> 0:40:01.760
<v Speaker 1>lymph in the cupula. Uh Multirelli writes, quote, the problem

0:40:01.840 --> 0:40:04.720
<v Speaker 1>comes when you stop. Your muscles are able to start

0:40:04.719 --> 0:40:07.680
<v Speaker 1>and stop really quickly without any issues, but that fluid

0:40:07.760 --> 0:40:10.880
<v Speaker 1>doesn't work as fast. Even though you stopped, the fluid

0:40:10.920 --> 0:40:13.040
<v Speaker 1>is still moving and it takes some time for it

0:40:13.080 --> 0:40:16.359
<v Speaker 1>to finally stop. While it's still moving, those hairs are

0:40:16.360 --> 0:40:19.040
<v Speaker 1>still picking up on the motion and sending signals saying

0:40:19.120 --> 0:40:22.320
<v Speaker 1>I'm moving to the brain. The brain receives the signal,

0:40:22.600 --> 0:40:25.600
<v Speaker 1>but at the same time knows the body is perfectly still.

0:40:26.040 --> 0:40:29.560
<v Speaker 1>And the same explanation about the the inertial effects of

0:40:29.600 --> 0:40:31.960
<v Speaker 1>the moving indo lymph within the canals in the brain

0:40:32.760 --> 0:40:34.920
<v Speaker 1>or in the in the in the interear. This is

0:40:35.000 --> 0:40:37.759
<v Speaker 1>also mirrored in the House Stuff Works article that I

0:40:37.760 --> 0:40:40.720
<v Speaker 1>found on the subject. Is basically, the indo lymph keeps

0:40:40.760 --> 0:40:45.720
<v Speaker 1>moving after you stop spinning. This confuses the brain. While

0:40:45.840 --> 0:40:48.960
<v Speaker 1>these explanations so I found this across multiple sources, it

0:40:49.040 --> 0:40:51.080
<v Speaker 1>does seem to sort of make sense. But if this

0:40:51.200 --> 0:40:54.120
<v Speaker 1>is true, one thing I wonder about is why is

0:40:54.160 --> 0:40:58.359
<v Speaker 1>it that spinning in particular is liable to make you dizzy?

0:40:58.560 --> 0:41:02.000
<v Speaker 1>And why not other type of movement couldn't other types

0:41:02.000 --> 0:41:06.120
<v Speaker 1>of movement apart from spinning also cause you know, inertial

0:41:06.200 --> 0:41:08.680
<v Speaker 1>drag in the fluids in your inner ears, and that

0:41:09.040 --> 0:41:13.040
<v Speaker 1>your body would stop moving before the fluid stops moving. Yeah,

0:41:13.120 --> 0:41:15.520
<v Speaker 1>that's a good question, I am, you know, based on

0:41:15.719 --> 0:41:18.200
<v Speaker 1>some of the stuff will discuss I think mostly in

0:41:18.200 --> 0:41:20.440
<v Speaker 1>the next episode. It does make me think about the

0:41:20.880 --> 0:41:26.200
<v Speaker 1>frequency of of use when it comes to spins, you know, um,

0:41:26.520 --> 0:41:31.399
<v Speaker 1>like in terms of just straight up acceleration and deceleration, uh,

0:41:31.400 --> 0:41:33.960
<v Speaker 1>in our daily lives, Like we might not be running

0:41:34.080 --> 0:41:37.920
<v Speaker 1>marathons and passing batons all that much, but we are

0:41:37.960 --> 0:41:45.320
<v Speaker 1>still accelerating and decelerating fairly regularly. Whereas the spin especially

0:41:45.400 --> 0:41:47.240
<v Speaker 1>you know, the sort of spins that we think about,

0:41:47.680 --> 0:41:51.160
<v Speaker 1>uh and and experience related to dizziness, those are not

0:41:51.200 --> 0:41:54.520
<v Speaker 1>going to necessarily be a regular part of your daily life,

0:41:55.040 --> 0:41:56.920
<v Speaker 1>That's true. Yeah, it could be a it could be

0:41:57.000 --> 0:41:59.440
<v Speaker 1>a conditioning thing, and the conditioning thing would actually tie

0:41:59.440 --> 0:42:01.000
<v Speaker 1>into something that we're going to talk about in a

0:42:01.040 --> 0:42:04.160
<v Speaker 1>bit when we get into how like dancers and and

0:42:04.320 --> 0:42:07.520
<v Speaker 1>ice skaters supposedly deal with this. But before we get

0:42:07.560 --> 0:42:10.319
<v Speaker 1>into that, I wanted to mention the other explanations I

0:42:10.400 --> 0:42:13.399
<v Speaker 1>came across um for for why we get dizzy when

0:42:13.400 --> 0:42:17.520
<v Speaker 1>we spin in circles, and specifically, these other explanations are

0:42:17.520 --> 0:42:21.560
<v Speaker 1>based in the brain's constant attempt to coordinate vestibular information

0:42:21.600 --> 0:42:25.360
<v Speaker 1>with visual information from the eyes specifically, So this is

0:42:25.400 --> 0:42:28.480
<v Speaker 1>from an explainer I found written in Scientific American written

0:42:28.480 --> 0:42:33.360
<v Speaker 1>by Amir Karadmond, who is a neurologist with Johns Hopkins Medicine,

0:42:34.239 --> 0:42:38.640
<v Speaker 1>and Kadmond has has this different explanation. He says, quote,

0:42:38.680 --> 0:42:40.960
<v Speaker 1>if we rotate our head to the right while our

0:42:40.960 --> 0:42:44.720
<v Speaker 1>eyes remain focused on an object straight ahead, our eyes

0:42:44.840 --> 0:42:48.080
<v Speaker 1>naturally moved to the left at the same speed. This

0:42:48.160 --> 0:42:53.000
<v Speaker 1>involuntary response allows us to stay focused on a stationary object.

0:42:53.480 --> 0:42:56.440
<v Speaker 1>And this is really physiologically important, right, Like, for the

0:42:56.480 --> 0:42:58.680
<v Speaker 1>body to function, you need to be able to keep

0:42:58.719 --> 0:43:02.520
<v Speaker 1>focused on something while you're moving around, you know, otherwise

0:43:02.520 --> 0:43:05.279
<v Speaker 1>it would be really difficult to like hunt or fight

0:43:05.400 --> 0:43:08.239
<v Speaker 1>or you know, do anything like that if you can't

0:43:08.280 --> 0:43:10.560
<v Speaker 1>stay focused even while your body is moving. So the

0:43:10.640 --> 0:43:16.080
<v Speaker 1>eyes adjust as as the body moves um, but Karadmon

0:43:16.200 --> 0:43:20.080
<v Speaker 1>continues quote. Spinning is more complicated. When we move our

0:43:20.120 --> 0:43:22.880
<v Speaker 1>head during a spin, our eyes start to move in

0:43:22.920 --> 0:43:26.560
<v Speaker 1>the opposite direction, but reach their limit before our head

0:43:26.600 --> 0:43:30.160
<v Speaker 1>completes a full three and sixty degree turn, So our

0:43:30.320 --> 0:43:33.920
<v Speaker 1>eyes flick back to a new starting position mid spin,

0:43:34.320 --> 0:43:37.279
<v Speaker 1>and the motion repeats as we rotate. When our head

0:43:37.360 --> 0:43:42.640
<v Speaker 1>rotation triggers this automatic repetitive eye movement called nastagmus, we

0:43:42.760 --> 0:43:47.359
<v Speaker 1>get dizzy. Uh so nastagmus again. Yeah, it's this repetitive

0:43:47.560 --> 0:43:51.520
<v Speaker 1>jerking around of the eyes UM and nastagmus can be

0:43:51.560 --> 0:43:54.000
<v Speaker 1>triggered by certain kinds of stimuli, Like if you show

0:43:54.040 --> 0:43:58.319
<v Speaker 1>people a rotating drum that has stripes painted on it,

0:43:58.600 --> 0:44:01.040
<v Speaker 1>you can trigger na stagmas as the eye tries to

0:44:01.120 --> 0:44:05.960
<v Speaker 1>track the fast moving stripes as as they go past. Um.

0:44:06.000 --> 0:44:09.440
<v Speaker 1>But another interesting fact I found is that nastagmus plays

0:44:09.440 --> 0:44:12.960
<v Speaker 1>an important role in the arsenal of field sobriety tests

0:44:13.080 --> 0:44:16.799
<v Speaker 1>used by law enforcement. So the normal procedure for this

0:44:16.920 --> 0:44:19.759
<v Speaker 1>is if you know a police officers trying to do

0:44:20.080 --> 0:44:22.880
<v Speaker 1>a field sobriety test on somebody they've pulled over, they

0:44:22.880 --> 0:44:25.640
<v Speaker 1>will ask them to hold their heads still, and then

0:44:25.680 --> 0:44:29.040
<v Speaker 1>they will ask the subject to follow a moving stimulus

0:44:29.080 --> 0:44:32.759
<v Speaker 1>with their eyes without moving their head. And then you

0:44:32.800 --> 0:44:35.600
<v Speaker 1>move the stimulus steadily, sort of in an arc around

0:44:35.680 --> 0:44:38.319
<v Speaker 1>towards the person's side, and as they follow it with

0:44:38.360 --> 0:44:42.239
<v Speaker 1>their eyes. Supposedly there are types of nastagmus, or these

0:44:42.280 --> 0:44:46.520
<v Speaker 1>repetitive jerking movements of the eyes that are usually indicative

0:44:46.680 --> 0:44:50.640
<v Speaker 1>of intoxication. Though I should note that just in poking

0:44:50.640 --> 0:44:52.840
<v Speaker 1>around a little bit, it looks like there's some controversy

0:44:52.960 --> 0:44:56.600
<v Speaker 1>over the reliability of this test. And it's used by police. Yeah,

0:44:56.640 --> 0:44:58.799
<v Speaker 1>I mean, it's not like you have a tricorder type

0:44:58.800 --> 0:45:01.520
<v Speaker 1>device that you hold up and and scan the eyes.

0:45:01.560 --> 0:45:06.040
<v Speaker 1>It's based on what the police officer is observing and

0:45:06.040 --> 0:45:09.920
<v Speaker 1>then reporting regarding the movement the the the slight movements

0:45:09.920 --> 0:45:12.720
<v Speaker 1>of the individual's eyes. Right. And so this is interesting

0:45:12.760 --> 0:45:15.200
<v Speaker 1>because I feel like now we've got at least two

0:45:15.400 --> 0:45:18.640
<v Speaker 1>different explanations. In fact, this would be getting into a

0:45:18.640 --> 0:45:21.359
<v Speaker 1>whole other cannon worms. I found another explanation in a

0:45:21.480 --> 0:45:25.440
<v Speaker 1>very short explainer article uh for the BBC by a

0:45:25.880 --> 0:45:30.439
<v Speaker 1>by a zoologist and science communicator who who framed their

0:45:30.480 --> 0:45:34.759
<v Speaker 1>explanation more in terms of the brain getting desensitized to

0:45:34.960 --> 0:45:38.200
<v Speaker 1>spinning input and then deciding to ignore it. And then

0:45:38.200 --> 0:45:40.960
<v Speaker 1>when you stop spinning, the canceling out it has had

0:45:41.000 --> 0:45:44.360
<v Speaker 1>to do of the spinning input is uh is suddenly

0:45:44.360 --> 0:45:47.000
<v Speaker 1>counterproductive and makes you think the body is still moving.

0:45:47.400 --> 0:45:49.960
<v Speaker 1>I'm going to ignore that one for now and look

0:45:50.000 --> 0:45:52.520
<v Speaker 1>at these other main two explanations. So one is about

0:45:52.600 --> 0:45:55.359
<v Speaker 1>the inertia of the fluids in the canals in the

0:45:55.360 --> 0:45:58.440
<v Speaker 1>inner ear as as you spin around, and and that

0:45:58.560 --> 0:46:01.960
<v Speaker 1>inertia calling a feeling of spinning even after the body

0:46:01.960 --> 0:46:06.040
<v Speaker 1>has stopped spinning. The other is UH is about this

0:46:06.160 --> 0:46:09.239
<v Speaker 1>very different thing about what's happening with the eyes when

0:46:09.320 --> 0:46:12.360
<v Speaker 1>you spin around. And so I actually I was like,

0:46:12.560 --> 0:46:14.719
<v Speaker 1>maybe I can get some insight onto which of these

0:46:14.800 --> 0:46:17.840
<v Speaker 1>is correct uh. Though though I guess one thing I

0:46:17.840 --> 0:46:22.800
<v Speaker 1>should say is that these explanations are not necessarily mutually exclusive.

0:46:22.880 --> 0:46:24.960
<v Speaker 1>I mean, it could be that both of these things

0:46:25.400 --> 0:46:28.759
<v Speaker 1>contribute to dizziness. UM. But I wanted to get some

0:46:28.840 --> 0:46:31.680
<v Speaker 1>insight on this by experimenting on myself. I was actually

0:46:31.760 --> 0:46:34.360
<v Speaker 1>lying in bed last night thinking about this, trying to

0:46:34.400 --> 0:46:37.440
<v Speaker 1>sort out like why these two different explanations have come across,

0:46:38.480 --> 0:46:41.520
<v Speaker 1>which one could be correct or more correct, and I

0:46:41.560 --> 0:46:43.440
<v Speaker 1>decided I had to get up out of bed and

0:46:43.520 --> 0:46:47.319
<v Speaker 1>spin around to test this out. So um so I

0:46:47.360 --> 0:46:50.040
<v Speaker 1>recognized this experiment is just on me. I just did

0:46:50.040 --> 0:46:52.080
<v Speaker 1>it once. This is not going to pass peer review.

0:46:52.200 --> 0:46:54.799
<v Speaker 1>This is not scientifically rigorous, but it was at least

0:46:54.800 --> 0:46:58.160
<v Speaker 1>interesting to me. So what what I did was I

0:46:58.200 --> 0:47:02.799
<v Speaker 1>tried spinning around for twelve revolutions uh boat in two

0:47:02.800 --> 0:47:05.640
<v Speaker 1>different conditions, one with my eyes closed so i'd be

0:47:05.719 --> 0:47:09.320
<v Speaker 1>unlikely to experience na stagmas, and one with my eyes

0:47:09.400 --> 0:47:11.560
<v Speaker 1>open so I would be and I was trying to

0:47:11.560 --> 0:47:14.680
<v Speaker 1>go to constant speed. I tried to keep the number

0:47:15.120 --> 0:47:19.400
<v Speaker 1>of revolutions the same for for each test condition um

0:47:19.520 --> 0:47:21.719
<v Speaker 1>and and have the only thing different being whether my

0:47:21.760 --> 0:47:24.400
<v Speaker 1>eyes were open or closed. So I will say I

0:47:24.440 --> 0:47:29.680
<v Speaker 1>felt dizzy after both spinning sessions, but I felt significantly

0:47:29.800 --> 0:47:33.640
<v Speaker 1>worse significantly dizzy or after the one with my eyes open.

0:47:34.200 --> 0:47:38.279
<v Speaker 1>Though it's complicated because that was the second one I did,

0:47:38.440 --> 0:47:41.120
<v Speaker 1>so there could also be cumulative effects. I tried to

0:47:41.160 --> 0:47:44.000
<v Speaker 1>rest in between them, but I didn't rest that long,

0:47:44.320 --> 0:47:47.040
<v Speaker 1>and so there could have been cumulative effects where it

0:47:47.080 --> 0:47:49.520
<v Speaker 1>wasn't necessarily that spinning with the eyes open is worse,

0:47:49.600 --> 0:47:51.959
<v Speaker 1>but just that I spun around in circles twenty four

0:47:52.000 --> 0:47:55.600
<v Speaker 1>times recently instead of twelve times after that one. So

0:47:56.160 --> 0:47:59.120
<v Speaker 1>the other thing is I really really do not recommend

0:47:59.200 --> 0:48:01.759
<v Speaker 1>spinning in circle twenty four times before bed I was

0:48:02.120 --> 0:48:06.640
<v Speaker 1>lying there feeling pretty gross. Yeah, yeah, definitely. As you

0:48:06.680 --> 0:48:09.080
<v Speaker 1>listen to these episodes, you're going to want to try

0:48:09.080 --> 0:48:12.839
<v Speaker 1>a little bit of spinning. That's understandable, and we encouraged that.

0:48:13.000 --> 0:48:16.920
<v Speaker 1>But please be careful, Please be careful spinning. Uh and

0:48:17.000 --> 0:48:20.239
<v Speaker 1>you know, realize that you will probably become dizzy and you,

0:48:20.360 --> 0:48:22.200
<v Speaker 1>I mean, you don't want to suffer a fall or

0:48:22.200 --> 0:48:25.200
<v Speaker 1>anything like that. Yeah. Uh So I don't think my

0:48:25.200 --> 0:48:28.359
<v Speaker 1>my personal experiment really settled the question, and it could

0:48:28.400 --> 0:48:31.919
<v Speaker 1>be their confounding varials variables. But I did find that

0:48:33.040 --> 0:48:36.280
<v Speaker 1>at least seemed possible to me that having your eyes

0:48:36.320 --> 0:48:40.560
<v Speaker 1>open during spinning makes the dizziness issue significantly worse than

0:48:40.960 --> 0:48:43.680
<v Speaker 1>than spinning with the eyes closed, which would seem to

0:48:43.760 --> 0:48:47.080
<v Speaker 1>lend some credence to the explanation offered by Karadmond that

0:48:47.160 --> 0:48:50.640
<v Speaker 1>it has something to do with the movement of the eyes.

0:48:52.040 --> 0:48:54.000
<v Speaker 1>But like I said, it could be the case that

0:48:54.040 --> 0:48:57.520
<v Speaker 1>actually both of these things contribute to dizziness, and they

0:48:57.520 --> 0:49:00.720
<v Speaker 1>were just emphasizing different aspects of why we get dizzy

0:49:00.800 --> 0:49:03.759
<v Speaker 1>from spinning. Though, there's another idea that I that I got.

0:49:03.800 --> 0:49:07.040
<v Speaker 1>I guess maybe a hypothesis that my experiment brought up,

0:49:07.560 --> 0:49:11.600
<v Speaker 1>which is, what if dizziness from spinning is strongly influenced

0:49:11.640 --> 0:49:15.680
<v Speaker 1>by the amount of time spent spinning as opposed to

0:49:15.840 --> 0:49:18.799
<v Speaker 1>just the number of rotations. So if we're, you know,

0:49:18.840 --> 0:49:20.920
<v Speaker 1>in a minute, we're going to talk about like ballerinas

0:49:20.920 --> 0:49:23.400
<v Speaker 1>and skaters, you would have to think that if a

0:49:23.440 --> 0:49:27.520
<v Speaker 1>skater does ten turns really fast, as as opposed to

0:49:27.520 --> 0:49:30.520
<v Speaker 1>me doing you know, ten or twelve turns pretty slow

0:49:30.800 --> 0:49:34.640
<v Speaker 1>standing in my bedroom. Uh, is that you know that

0:49:34.719 --> 0:49:37.440
<v Speaker 1>the skater would have it worse. But but maybe it's

0:49:37.440 --> 0:49:40.120
<v Speaker 1>actually worse to be spinning for a longer period of

0:49:40.160 --> 0:49:43.760
<v Speaker 1>time slower than a shorter period of time really fast.

0:49:48.440 --> 0:49:52.120
<v Speaker 1>Thank well, all right, let's let's talk a little bit

0:49:52.160 --> 0:49:55.560
<v Speaker 1>about the art of spinning, particularly as it relates to

0:49:56.160 --> 0:50:01.439
<v Speaker 1>ballet dancers and figure skaters. So certainly both of these

0:50:01.480 --> 0:50:03.799
<v Speaker 1>involve a fair amount of spinning around in circles. They

0:50:04.160 --> 0:50:08.760
<v Speaker 1>are the most amazing examples figure skaters, ballerinas balot ballet

0:50:08.840 --> 0:50:12.239
<v Speaker 1>dancers whose feats of spinning athletics are certainly enough to

0:50:12.280 --> 0:50:16.680
<v Speaker 1>cause feelings of a vertigo in the viewer, you know. Uh,

0:50:16.719 --> 0:50:20.960
<v Speaker 1>and yet we don't see these individuals tremendously affected. You know,

0:50:21.320 --> 0:50:24.360
<v Speaker 1>like like if of a dancer, does you know a

0:50:24.440 --> 0:50:29.600
<v Speaker 1>really impressive pirouette, Uh, they don't immediately fall onto the floor,

0:50:29.719 --> 0:50:32.719
<v Speaker 1>or at least that's not supposed to happen. Um. The

0:50:32.760 --> 0:50:35.640
<v Speaker 1>same goes for figure skaters, Right, they do some phenomenal

0:50:35.680 --> 0:50:39.279
<v Speaker 1>spin and then they're out informed to continue their routine, right,

0:50:39.320 --> 0:50:44.440
<v Speaker 1>I mean so if I spinning around slowly like twelve times,

0:50:44.960 --> 0:50:48.640
<v Speaker 1>have to stumble to my bed afterwards? Yeah? What how

0:50:48.680 --> 0:50:52.320
<v Speaker 1>do how do you continue a a really difficult intricate

0:50:52.400 --> 0:50:57.120
<v Speaker 1>you know, executing dance moves or or or continuing to skate?

0:50:57.160 --> 0:51:00.759
<v Speaker 1>I mean skating alone is difficult enough, right with your

0:51:00.800 --> 0:51:03.160
<v Speaker 1>balance thrown off like it like you would think it

0:51:03.200 --> 0:51:05.880
<v Speaker 1>should be after one of those spinning moves. Yeah, And

0:51:05.880 --> 0:51:08.880
<v Speaker 1>and yet they're not. And what it basically seems to

0:51:08.880 --> 0:51:11.600
<v Speaker 1>come down to is that they've essentially trained their brains

0:51:12.000 --> 0:51:14.520
<v Speaker 1>not to pay as much attention to the input from

0:51:14.600 --> 0:51:17.640
<v Speaker 1>from the vestibular system, so not to be thrown off

0:51:17.680 --> 0:51:20.560
<v Speaker 1>by the signals coming in. And this is something that

0:51:20.560 --> 0:51:24.120
<v Speaker 1>that comes through just continual practice and the ratcheting up

0:51:24.120 --> 0:51:26.600
<v Speaker 1>of your sort of spinning tolerance. Yeah, this seems to

0:51:26.600 --> 0:51:28.880
<v Speaker 1>be what I was reading as well. It's it seems

0:51:28.880 --> 0:51:31.680
<v Speaker 1>to be one of the main explanations is just conditioning.

0:51:31.800 --> 0:51:35.279
<v Speaker 1>It's like practice and conditioning of the brain to not

0:51:35.480 --> 0:51:40.759
<v Speaker 1>get as thrown off by the vestibular system's response to spinning. Right,

0:51:41.080 --> 0:51:43.160
<v Speaker 1>And it's and and that's not to discount it. It's

0:51:43.160 --> 0:51:45.920
<v Speaker 1>like it's really impressive. I was looking at a paper

0:51:45.920 --> 0:51:49.920
<v Speaker 1>about this two thousand thirteen Imperial College London study published

0:51:49.960 --> 0:51:54.680
<v Speaker 1>in the journal Cerebrial Cortex by the by Nigga Enigma

0:51:54.800 --> 0:51:58.200
<v Speaker 1>Tolina at All, and it was looking at why dancers

0:51:58.239 --> 0:52:00.560
<v Speaker 1>don't get dizzy. So what they did is they looked

0:52:00.600 --> 0:52:04.600
<v Speaker 1>at twenty nine female dancers and twenty female age matched

0:52:04.680 --> 0:52:08.439
<v Speaker 1>controls with no dancing experience. And this is we see

0:52:08.440 --> 0:52:10.320
<v Speaker 1>this in another study we'll talk about in the second episode,

0:52:10.320 --> 0:52:13.040
<v Speaker 1>where basically you have your expert spinners and your control

0:52:13.040 --> 0:52:15.600
<v Speaker 1>group is gonna consist of people who are more or

0:52:15.680 --> 0:52:20.520
<v Speaker 1>less comparable individuals just without that spinning experience, without that

0:52:20.640 --> 0:52:24.080
<v Speaker 1>dancing experience in this case. So they took these individuals

0:52:24.120 --> 0:52:26.120
<v Speaker 1>and they put them through a series of spinning tests

0:52:26.160 --> 0:52:29.759
<v Speaker 1>in a chair in a dark room. Um. Then they

0:52:29.800 --> 0:52:32.719
<v Speaker 1>measured the brains of the two groups and how the

0:52:32.800 --> 0:52:35.839
<v Speaker 1>volunteers reacted to the spinning, and they found that the

0:52:35.960 --> 0:52:40.040
<v Speaker 1>dancers recovered faster than the non dancers. Basically, the dancers

0:52:40.080 --> 0:52:43.000
<v Speaker 1>brains have adapted over years of training to suppress the

0:52:43.040 --> 0:52:46.560
<v Speaker 1>input that causes dizziness. It's a case of training related

0:52:46.680 --> 0:52:49.880
<v Speaker 1>brain plasticity. It's the sort of thing that uh, you know,

0:52:49.880 --> 0:52:52.040
<v Speaker 1>could one day be used to actually treat other conditions.

0:52:52.080 --> 0:52:53.880
<v Speaker 1>Knowledge of this could be used to treat other conditions

0:52:54.280 --> 0:52:57.719
<v Speaker 1>and enhance our understanding of how the brain heals itself. Now,

0:52:57.760 --> 0:53:00.239
<v Speaker 1>many ballet dancers, including those used in the study, use

0:53:00.320 --> 0:53:03.880
<v Speaker 1>something called spotting in their training. Yeah, that explained by

0:53:03.920 --> 0:53:07.680
<v Speaker 1>Karadmond mentions this that uh I think more so for

0:53:07.760 --> 0:53:12.200
<v Speaker 1>ballet dancers than for ice skaters. Uh Yes, having to

0:53:12.239 --> 0:53:14.920
<v Speaker 1>do with the speed of the rotation. But the ballet

0:53:15.000 --> 0:53:18.160
<v Speaker 1>dancers use this trick of how they move the head

0:53:18.200 --> 0:53:22.080
<v Speaker 1>and focus the vision to prevent them being overwhelmed by

0:53:22.680 --> 0:53:25.680
<v Speaker 1>nastagmus was the reason he cited for it, right. I

0:53:25.760 --> 0:53:28.239
<v Speaker 1>believe this is pretty well presented in I mean you

0:53:28.280 --> 0:53:30.680
<v Speaker 1>can you can see it in dance and if you

0:53:30.840 --> 0:53:32.759
<v Speaker 1>are like me and most of your ballet experience these

0:53:32.800 --> 0:53:35.919
<v Speaker 1>days comes from watching ballet horror movies like The Two

0:53:35.960 --> 0:53:39.000
<v Speaker 1>Suspirias and Black Swan, and then you know what I'm

0:53:39.000 --> 0:53:42.040
<v Speaker 1>talking about, Like, it's really, you know, interesting to watch

0:53:42.040 --> 0:53:44.640
<v Speaker 1>the way their head seems to like swing back around

0:53:44.640 --> 0:53:47.600
<v Speaker 1>to the same position as their body spins. You focus

0:53:47.680 --> 0:53:50.040
<v Speaker 1>as the dancer, you focus your eyes on one area

0:53:50.040 --> 0:53:51.960
<v Speaker 1>in front of you as you spin around over and

0:53:52.040 --> 0:53:55.080
<v Speaker 1>over again, and this helps you stay steady. You keep

0:53:55.120 --> 0:53:57.319
<v Speaker 1>moving your head around to the same point while the

0:53:57.360 --> 0:54:00.960
<v Speaker 1>body spins. But the authors in this particular studies say

0:54:01.000 --> 0:54:05.880
<v Speaker 1>that that spotting alone isn't enough to account for the ability.

0:54:05.920 --> 0:54:09.680
<v Speaker 1>And likewise, as you mentioned, figure skaters don't really do spotting,

0:54:09.680 --> 0:54:13.520
<v Speaker 1>not exactly. So basically there's figure skaters are spinning way

0:54:13.520 --> 0:54:16.480
<v Speaker 1>too fast for one thing. So I've read that some

0:54:16.600 --> 0:54:20.320
<v Speaker 1>figure skaters do use a form of spotting to count

0:54:20.320 --> 0:54:23.200
<v Speaker 1>their revolutions. So just just counting how many times a

0:54:23.200 --> 0:54:26.879
<v Speaker 1>particular spot on the ice passes you buy uh. They

0:54:26.920 --> 0:54:30.080
<v Speaker 1>may also instantly focus on something as they come out

0:54:30.120 --> 0:54:33.000
<v Speaker 1>of an intense spin in order to get their bearing straight.

0:54:33.320 --> 0:54:36.600
<v Speaker 1>But as with ballet dancers, figure skaters simply get used

0:54:36.640 --> 0:54:38.920
<v Speaker 1>to the spin. I was reading that they they only

0:54:39.000 --> 0:54:41.920
<v Speaker 1>really feel dizzy when they start upping their spin levels

0:54:41.920 --> 0:54:46.320
<v Speaker 1>and training, but then their their bodies their minds adjust

0:54:46.360 --> 0:54:49.000
<v Speaker 1>to that as well. Okay, so it sounds like it's

0:54:49.040 --> 0:54:52.240
<v Speaker 1>not just like there is a trick to not feeling

0:54:52.280 --> 0:54:55.600
<v Speaker 1>dizzy from spinning. It's there are tricks like spotting, but

0:54:55.680 --> 0:54:58.240
<v Speaker 1>that doesn't fully explain it. A lot of it's probably

0:54:58.320 --> 0:55:02.080
<v Speaker 1>just conditioning. It's just this, right, the more you spin,

0:55:02.239 --> 0:55:05.880
<v Speaker 1>the more your your brain becomes a customed to this

0:55:06.000 --> 0:55:08.959
<v Speaker 1>input and realizes, yeah, the spinning is what we do.

0:55:09.320 --> 0:55:12.360
<v Speaker 1>This is we can. We can. It basically acclimatizes to

0:55:12.600 --> 0:55:15.600
<v Speaker 1>the spinning reality. It makes me wonder if you could,

0:55:15.840 --> 0:55:19.239
<v Speaker 1>you know, create a generation of like super ballerinas or

0:55:19.320 --> 0:55:23.520
<v Speaker 1>super skaters by by bringing them up from from infancy

0:55:23.960 --> 0:55:27.720
<v Speaker 1>in an environment where they're deeply desensitized to like different

0:55:27.719 --> 0:55:30.960
<v Speaker 1>types of vestibular disorientation, like if you maybe if you

0:55:31.040 --> 0:55:35.080
<v Speaker 1>raise them in space or something. Um well, I mean,

0:55:35.120 --> 0:55:36.760
<v Speaker 1>on one hand, I feel like what you just described

0:55:36.760 --> 0:55:39.000
<v Speaker 1>it and seem that far from like the really hardcore

0:55:39.120 --> 0:55:42.520
<v Speaker 1>world of of professional dance, right, like just start conditioning

0:55:42.560 --> 0:55:45.680
<v Speaker 1>them very young. But on the space question, uh, I

0:55:45.960 --> 0:55:48.000
<v Speaker 1>looked that up as well. You know, can you get

0:55:48.000 --> 0:55:50.440
<v Speaker 1>Disney and Space? I mean, what does dizziness and space

0:55:50.440 --> 0:55:53.000
<v Speaker 1>consists of? And I found an Avery Thompson piece and

0:55:53.080 --> 0:55:57.400
<v Speaker 1>popular Mechanics. They discussed this citing personal experiments, um you

0:55:57.400 --> 0:56:00.799
<v Speaker 1>know personal um, you know, informal experien moments performed by

0:56:00.800 --> 0:56:04.759
<v Speaker 1>astronaut Tim Peak. And basically it's a case again of

0:56:04.760 --> 0:56:06.799
<v Speaker 1>of of the brain adapting. In this case, the brain

0:56:06.840 --> 0:56:09.600
<v Speaker 1>adapting to the initial feeling of spinning that one experiences

0:56:09.640 --> 0:56:12.640
<v Speaker 1>in low gravity, and the brain adapts to this change,

0:56:12.880 --> 0:56:16.280
<v Speaker 1>and then it's very difficult to feel dizzy, um Peak says,

0:56:16.520 --> 0:56:20.320
<v Speaker 1>unless sudden acceleration is involved. I think this was the

0:56:20.400 --> 0:56:23.520
<v Speaker 1>ultimate plan of that guy from Moonraker. He wanted to

0:56:23.640 --> 0:56:25.840
<v Speaker 1>let you know what he was like going to sterilize

0:56:25.880 --> 0:56:27.840
<v Speaker 1>the Earth or kill all the humans, and he's like

0:56:28.080 --> 0:56:30.759
<v Speaker 1>moved all of his beloved people up to the to

0:56:30.880 --> 0:56:33.960
<v Speaker 1>the space station. Clearly he's trying to create a generation

0:56:34.000 --> 0:56:38.480
<v Speaker 1>of super ballerinas to rule the post apocalyptic earth. Oh man, Yeah,

0:56:38.520 --> 0:56:42.480
<v Speaker 1>Moonraker so good. I feel like Moonraker is probably good. Uh,

0:56:42.840 --> 0:56:46.120
<v Speaker 1>the one Bond film we could do for weird house cinema,

0:56:46.200 --> 0:56:49.560
<v Speaker 1>like it's the it's the weirdest. Yeah, I think you're right. Well, well,

0:56:49.600 --> 0:56:52.080
<v Speaker 1>I don't know. Maybe that last pierced Bras in the

0:56:52.160 --> 0:56:55.080
<v Speaker 1>movie with the Invisible car and the castle made of ice,

0:56:55.280 --> 0:56:58.000
<v Speaker 1>that that's Oh I never saw that one, but I yeah,

0:56:58.000 --> 0:57:00.680
<v Speaker 1>I have heard it has some pretty bonker elements to it.

0:57:00.680 --> 0:57:03.239
<v Speaker 1>It's up there with Moonraker for for weirdness. Those are

0:57:03.320 --> 0:57:07.719
<v Speaker 1>the two goodest ones. All right, Well, again, this was

0:57:07.760 --> 0:57:10.239
<v Speaker 1>part one. We're gonna come back for part two, and

0:57:10.239 --> 0:57:12.680
<v Speaker 1>in part two we're going to discuss, among other things,

0:57:13.200 --> 0:57:16.600
<v Speaker 1>um meditative states in spinning. We're gonna we're gonna discuss

0:57:18.040 --> 0:57:22.040
<v Speaker 1>the Sufi whirling uh Sufi mysticism and uh and the

0:57:22.520 --> 0:57:24.960
<v Speaker 1>spinning that is involved in that and in a particular

0:57:25.000 --> 0:57:28.360
<v Speaker 1>study that looks at at it. Uh. So we hope

0:57:28.360 --> 0:57:31.440
<v Speaker 1>that you will come back for that episode. In the meantime,

0:57:31.840 --> 0:57:33.480
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0:57:33.480 --> 0:57:35.600
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