WEBVTT - The Upside-Down, Part 2

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<v Speaker 1>Welcome to Stuff to Blow Your Mind production of iHeartRadio.

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<v Speaker 2>Hey, welcome to Stuff to Blow Your Mind. My name

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<v Speaker 2>is Robert Lamb.

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<v Speaker 3>And I'm Joe McCormick, and we're back with part two

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<v Speaker 3>in our series on the theme of being upside down.

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<v Speaker 3>In the last episode, we started off talking about a

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<v Speaker 3>very strange and interesting scene in the Divine Comedy of Dante,

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<v Speaker 3>in which Dante the pilgrim and Virgil his guide are

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<v Speaker 3>in Hell and they are at the very bottom of Hell.

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<v Speaker 3>They are crawling down the wooly haunch of Satan, so

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<v Speaker 3>they're on Satan's body and the world suddenly appears to

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<v Speaker 3>turn upside down. We talked about what that scene meant

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<v Speaker 3>within Dante's medieval worldview and how subsequent changes in our

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<v Speaker 3>understanding of physics and cosmology affect how that scene reads.

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<v Speaker 3>After that, we started looking at the principle of upside

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<v Speaker 3>downness in mammal biology, focusing first on bats, very very

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<v Speaker 3>upside down creatures in multiple ways, and then on tree sloths,

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<v Speaker 3>and we got into all kinds of questions like why

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<v Speaker 3>these animals are adapted to hang upside down, how their

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<v Speaker 3>bodies managed this, especially since it's something that becomes incredibly

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<v Speaker 3>uncomfortable for us after a few minutes or less. And

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<v Speaker 3>we're back today to talk about more.

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<v Speaker 2>That's right. And in the last episode about where we

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<v Speaker 2>had ended things, we had been talking about upside down

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<v Speaker 2>sloths or sloths, and we were talking about bats, and

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<v Speaker 2>we teased out the idea of talking a little bit

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<v Speaker 2>about vampires, and you know, especially talking about vampire bats,

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<v Speaker 2>like moving this underside of a branch in order to

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<v Speaker 2>get at some birds. You know, I couldn't help but

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<v Speaker 2>think about vampires and think about Dracula, and it actually

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<v Speaker 2>called to mind an excellent passage from the novel Dracula

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<v Speaker 2>by Bromstoker. I'm going to read it from it here.

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<v Speaker 2>What I saw was the count's head coming out from

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<v Speaker 2>the window. I did not see the face, but I

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<v Speaker 2>knew the man by the neck and the movement of

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<v Speaker 2>his back and arms. In any case, I could not

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<v Speaker 2>mistake the hands, which I had had so many opportunities

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<v Speaker 2>of studying. I was at first interested and somewhat amused,

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<v Speaker 2>for it is wonderful how small a matter will interest

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<v Speaker 2>and amuse a man when he is a prisoner. But

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<v Speaker 2>my very feelings changed to repulsion and terror when I

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<v Speaker 2>saw the whole man slowly emerge from the window and

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<v Speaker 2>began to crawl down the castle wall, over that dreadful abyss,

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<v Speaker 2>face down, with his cloak spreading out around him like

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<v Speaker 2>great wings. At first I could not believe my eyes.

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<v Speaker 2>I thought it was some trick of the moonlight, some

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<v Speaker 2>weird effect of shadow. But I kept looking, and it

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<v Speaker 2>could be no delusion. I saw the fingers and toes

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<v Speaker 2>grasp the corners of the stone, worn clear of the

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<v Speaker 2>moor or by the stress of years, and by thus

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<v Speaker 2>using every projection and inequality, moved downwards with considerable speed,

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<v Speaker 2>just as a lizard moves along a wall.

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<v Speaker 3>It's funny because this scene from the book is pretty

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<v Speaker 3>faithfully reproduced. I think in the Francis Ford Coppola Dracula movie,

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<v Speaker 3>there's a scene where they show Gary Oldman in his

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<v Speaker 3>he's still in the Old Man Dracula form with the

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<v Speaker 3>butt hair, so he's got the butt hair, but he's

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<v Speaker 3>crawling down, face down, down the wall of the castle,

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<v Speaker 3>and I think they use some sped up film to

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<v Speaker 3>like show him scuttling really quick like a lizard, and

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<v Speaker 3>it's almost funny looking, But that is what the what

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<v Speaker 3>the novel, says.

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<v Speaker 2>Yeah, I love that scene in the in the movie.

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<v Speaker 2>And and so we see this reference visually a lot

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<v Speaker 2>in various vamphire films and other sci fi and horror films.

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<v Speaker 2>And I was trying to think of a few examples.

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<v Speaker 2>Really one of the first ones that this didn't quite

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<v Speaker 2>come to mind, but it came up when I was

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<v Speaker 2>looking around. There is a scene in John Carpenter's Vampires.

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<v Speaker 2>You know, as we discussed, not the top tier Carpenter,

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<v Speaker 2>but still, as it is the case with any John

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<v Speaker 2>Carpenter film, some interesting moments, And there is a moment

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<v Speaker 2>where we have the big bad vampire of that picture

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<v Speaker 2>kind of positioned in a cruciform pose on the ceiling

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<v Speaker 2>behind one of the characters.

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<v Speaker 3>Yeah, almost looks like laying down drunken on the floor,

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<v Speaker 3>but on the ceiling right now.

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<v Speaker 2>In films that we've watched for Weird House Cinema, our

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<v Speaker 2>Friday episodes of the show when we just talk about

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<v Speaker 2>a weird movie, we did recently watch The Boxer's Omen

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<v Speaker 2>in which we have a warlock character who is who

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<v Speaker 2>has a close affiliation with bats and other creatures, and

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<v Speaker 2>he climbs on the ceiling and crawls across the ceiling

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<v Speaker 2>in order to what drop a spider down onto a

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<v Speaker 2>rival Buddhist sorcerer.

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<v Speaker 3>I believe, yes, he has a there's a there's a

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<v Speaker 3>good sorcerer and an evil sorcerer, and the evil one

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<v Speaker 3>attacks the good one by i think, dropping spiders on

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<v Speaker 3>his face that stab his eyes with him.

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<v Speaker 2>Yeah, yes, and blind him. But yeah. Various movies love

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<v Speaker 2>to throw their monsters up onto the ceiling. There is,

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<v Speaker 2>of course, a pretty amazing and famous sequence in John

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<v Speaker 2>Carpenter is the thing in which one of the you know,

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<v Speaker 2>the entity, the entity is pretending to be one of

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<v Speaker 2>the humans, and it ends up like flying up onto

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<v Speaker 2>the ceiling and begins to you know, bubble and transmute

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<v Speaker 2>into a different form.

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<v Speaker 3>I wonder by what mechanism is the thing sticking to

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<v Speaker 3>the ceiling, because it's supposed to be human anatomy at.

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<v Speaker 2>That point, Yeah, I'm not sure I really need to

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<v Speaker 2>sit down and rewatch it. But I there's a lot

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<v Speaker 2>of crazy stuff happening in that sequence, so it almost

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<v Speaker 2>feels feels sensible that the impossible is happening. So vampires

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<v Speaker 2>are of course closely associated with dats in many traditions,

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<v Speaker 2>especially modern tradition. But I have another bat related creature

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<v Speaker 2>to bring up here, and it is the Alan of

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<v Speaker 2>the Philippines. This is spelled just like Alan, but it

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<v Speaker 2>is the name of a particular creature in Filipino tradition.

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<v Speaker 2>And I first read about this creature in the work

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<v Speaker 2>of folk lore's Carol Rose, who I frequently saw it.

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<v Speaker 2>She has a couple of tremendous volumes that have a

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<v Speaker 2>lot of creatures chronicled from around the world, and Rose

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<v Speaker 2>describes them as a is, this being a group of

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<v Speaker 2>creatures in the folklore of the Tengean people, also I

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<v Speaker 2>think referred to as the Itnig of the Philippines, and

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<v Speaker 2>she describes them as bird like people with fingers and

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<v Speaker 2>toes that point backwards, which enable them to hang upside

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<v Speaker 2>down from the topmost branches of trees. So we get

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<v Speaker 2>inverted and backwards with this creature, and clearly, despite being

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<v Speaker 2>described in Avian terms, their basic description brings to mind

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<v Speaker 2>the various fruit bats of the world, and a number

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<v Speaker 2>of them are found in the Philippines, including the giant

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<v Speaker 2>golden crowned flying fox. They roost in the trees, but

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<v Speaker 2>the al roosts in the trees, but also have houses

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<v Speaker 2>of pure gold on the ground. Were told and different

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<v Speaker 2>tales position them as you know, everything from tricksters to

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<v Speaker 2>benevolent helpers. So I was looking for more information about

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<v Speaker 2>these creatures, and I found I ran across the excellent website,

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<v Speaker 2>the Aswang Project, which I believe I've encountered before. It's

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<v Speaker 2>maintained by one Jordan Clark, and he points He points

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<v Speaker 2>to several other things about these creatures, points out that

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<v Speaker 2>they're said to adopt lost children, and also that they

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<v Speaker 2>make new elons out of the sort of pilfer biomaterials

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<v Speaker 2>associated with female human procreation or the female side of

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<v Speaker 2>human procreation. So I don't know, they're kind of crafty

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<v Speaker 2>genetic tinkerers, I imagine in that regard. Clark's breakdown also

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<v Speaker 2>points at the possibility in some Western retellings that the

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<v Speaker 2>Alan is confused and combined with other creatures, and points

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<v Speaker 2>out that there are a finite number of creature types

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<v Speaker 2>in the Philippines, but with lots of regional variations, which

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<v Speaker 2>is something I think we find in a lot of

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<v Speaker 2>folkloric traditions. So reminder that the Philippines consist of more

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<v Speaker 2>than seven thousand islands and more than one hundred and

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<v Speaker 2>eighty five ethnic groups. So you might have a certain

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<v Speaker 2>type of creature that's common in different groups, but you know,

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<v Speaker 2>individual communities even are going to have a different spin

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<v Speaker 2>on that creature. Now, turning to the world of Japanese

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<v Speaker 2>yo kai, who I found not one, but two very

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<v Speaker 2>interesting ceiling related creatures. So the first is the Tinjo kudari,

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<v Speaker 2>and this is a yokai whose name translates, I believe

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<v Speaker 2>roughly to the ceiling hangar. I've also seen it described

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<v Speaker 2>as the ceiling dropper. So this entity was first reported

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<v Speaker 2>by noted scholar and yokai chronicler Tori Seki in his

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<v Speaker 2>illustrated Yokai books of the eighteenth century, and according to

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<v Speaker 2>Matthew Meyers Yokai dot Com, there's an argument to be

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<v Speaker 2>made here that Sekian largely created this creature. So it

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<v Speaker 2>kind of depends on his yokai some of them. Some

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<v Speaker 2>of them are definitely more folk traditions that he is reporting,

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<v Speaker 2>some he's maybe putting his own spin on, and some

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<v Speaker 2>he may be sort of creating whole cloth. So Matthew

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<v Speaker 2>Meyer writes, quote in Old Japan, the space above the

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<v Speaker 2>ceiling was connected with lots of superstitions about dead bodies

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<v Speaker 2>rolling about or women being confined like prisoners. Tinjo Kudari

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<v Speaker 2>seems to have been something Toriyama invented based on those myths. Fittingly,

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<v Speaker 2>during this time, the phrase to show someone in the

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<v Speaker 2>ceiling was a colloquial expression for causing trouble, which Tinjo

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<v Speaker 2>Kudari certainly does, and he adds the possible connection to

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<v Speaker 2>another tale, a story of a yokai that was something

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<v Speaker 2>of an attic monster in an inn, descended down at

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<v Speaker 2>night to drag travelers up to consume them. And of

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<v Speaker 2>course that one is more overtly threatening than a lot

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<v Speaker 2>of yokai. A lot of yokai, as we've discussed in

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<v Speaker 2>the show before, they're just they're doing their own creepy thing,

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<v Speaker 2>and just witnessing them is maybe the limit of human interaction.

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<v Speaker 3>I see, Yeah, they're living parallel lives in a parallel

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<v Speaker 3>world almost. But yeah, but some are more more predatory.

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<v Speaker 2>Yeah, yeah, Like some are going to be more aggressive

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<v Speaker 2>and might hurt you or harm you in some way,

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<v Speaker 2>and some they're just like, well, you've got to peek

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<v Speaker 2>into the unseen world there, and I hope you're okay

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<v Speaker 2>with it. Okay, Now, I did find this whole treatment

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<v Speaker 2>of the ceiling interesting, and I was reading also about

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<v Speaker 2>some other tradition, like their ghost stories about for instance,

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<v Speaker 2>acts of violence that have taken place that have like

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<v Speaker 2>left blood stains that never go away in ceilings and

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<v Speaker 2>so forth. You know, there are a lot of ghostly tales

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<v Speaker 2>like that. And there is another yo kai known as

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<v Speaker 2>the Tinjonami or the ceiling liquor, and this one is

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<v Speaker 2>also really fun. So according to Zach Davison at the

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<v Speaker 2>Hakku Monogatari kaiden Kai website, it visits during cold nights

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<v Speaker 2>to lick the ceiling, leaving these dark streaks behind on

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<v Speaker 2>the ceiling, the kind of streaks that say, a child

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<v Speaker 2>sleeping in a room might they can't go to sleep.

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<v Speaker 2>They're staring up at the ceiling. Maybe there's light from

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<v Speaker 2>outside playing on the ceiling and they're noticing these dark

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<v Speaker 2>streaks for the first time, and then they can reflect

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<v Speaker 2>on where these came from, allegedly the tongue of the

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<v Speaker 2>ceiling liquor. So don't stare at the ceiling because you

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<v Speaker 2>might see the ceiling liquor and if you see the

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<v Speaker 2>ceiling liquor licking the ceiling, you might die. Otherwise, no

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<v Speaker 2>real risks involve here. It's not actively trying to hurt you,

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<v Speaker 2>but it's not something you actually want to see occurring.

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<v Speaker 3>So the licks on the ceiling are an indicator. They're

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<v Speaker 3>not gonna mechanistically get you.

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<v Speaker 2>Yeah, but it's it's one of those interesting things. It's like,

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<v Speaker 2>this may be evidence of a ghost, but you don't

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<v Speaker 2>want to ever actually see the ghosts. The evidence is

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<v Speaker 2>all you really need. And so it's kind of a reminder,

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<v Speaker 2>do not look too closely here lest you see something

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<v Speaker 2>you can never unsee.

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<v Speaker 3>Ceiling liquor almost sounds like one of the Mule Lads,

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<v Speaker 3>doesn't that.

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<v Speaker 2>Yeah, yeah, yeah, yeah. So Davison also points out that

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<v Speaker 2>Sekian might be referring to a line of poetry here

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<v Speaker 2>that reads essentially, in the cold winter, tall ceilings swallow

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<v Speaker 2>the lantern light. And yeah. So this one was really

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<v Speaker 2>weird though, to try and figure out, like what are

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<v Speaker 2>we supposed to make of it? Like what is the

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<v Speaker 2>intended reader supposed to make of the idea of the

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<v Speaker 2>ceiling like liquor, And on one level, you potentially just

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<v Speaker 2>have a scary story that also explains mysterious stains. And

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<v Speaker 2>we're all familiar from seeing stains like this, you know,

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<v Speaker 2>often caused by like water dripping and so leaks in

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<v Speaker 2>the roof and so forth, no matter what the structure

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<v Speaker 2>of your house might be. But as Michael Dylan Foster

0:13:07.320 --> 0:13:11.080
<v Speaker 2>points out in twenty fifteen's Licking the Ceiling, semantic staining

0:13:11.160 --> 0:13:14.760
<v Speaker 2>and Monstrous Diversity, Yochai scholars have also brought up the

0:13:14.840 --> 0:13:21.440
<v Speaker 2>idea that second is referencing Edo period firefighters or the

0:13:21.559 --> 0:13:24.000
<v Speaker 2>especially their sort of signature of clothing, some of the

0:13:24.040 --> 0:13:28.320
<v Speaker 2>frills and the way that the clothing and thrills and

0:13:28.360 --> 0:13:31.760
<v Speaker 2>fingers of this creature are depicted, and it would be

0:13:31.760 --> 0:13:34.600
<v Speaker 2>a visual pun that might have been better understood on

0:13:34.600 --> 0:13:39.240
<v Speaker 2>some level by the intended reader. Okay, So Matthew Meyer

0:13:39.280 --> 0:13:42.520
<v Speaker 2>mentions this as well, describing the ceiling liquor as essentially

0:13:42.600 --> 0:13:47.240
<v Speaker 2>a transform matoid. These are like paper flags that were

0:13:47.240 --> 0:13:50.080
<v Speaker 2>carried by Edo period firemen. You can look up pictures

0:13:50.080 --> 0:13:52.040
<v Speaker 2>of these. They look like something you would have in

0:13:52.040 --> 0:13:55.600
<v Speaker 2>a parade, you know, lots of tassels and all. And

0:13:55.679 --> 0:13:58.839
<v Speaker 2>so the idea is maybe this creature is supposed to

0:13:58.880 --> 0:14:04.079
<v Speaker 2>be a transformed version of this thing that the firemen

0:14:04.120 --> 0:14:07.400
<v Speaker 2>would carry. But beyond that, I can't find much about

0:14:07.640 --> 0:14:10.960
<v Speaker 2>the definite connection here. Is it something concerning fire risks

0:14:11.040 --> 0:14:14.960
<v Speaker 2>and ceilings? To me at least uncertain because the prime

0:14:15.040 --> 0:14:18.240
<v Speaker 2>firefighting tool of these firemen would have been the destruction

0:14:18.400 --> 0:14:21.640
<v Speaker 2>or partial destruction of structures that were either on fire

0:14:21.840 --> 0:14:24.640
<v Speaker 2>or about to become on fire to keep that fire

0:14:24.680 --> 0:14:27.240
<v Speaker 2>from spreading. So water pumps were not really used till later,

0:14:28.360 --> 0:14:31.520
<v Speaker 2>because I was initially thinking, oh, well, maybe firefighters water

0:14:31.760 --> 0:14:34.760
<v Speaker 2>water damage stains. But I don't think that's the connection

0:14:34.880 --> 0:14:39.760
<v Speaker 2>here at all. But fascinating the way these things seem

0:14:40.160 --> 0:14:41.000
<v Speaker 2>to stitch together.

0:14:41.680 --> 0:14:46.360
<v Speaker 3>It's interesting regarding ghostly implications of perceived stains on the ceiling.

0:14:46.760 --> 0:14:50.360
<v Speaker 3>This may be a totally idiosyncratic connection that has nothing

0:14:50.360 --> 0:14:53.720
<v Speaker 3>to do with history. But I do know from at

0:14:53.800 --> 0:14:57.600
<v Speaker 3>least one example of somebody who has a fairly persistent

0:14:57.720 --> 0:15:01.160
<v Speaker 3>edge of sleek hallucinations tends to wake up thinking that

0:15:01.200 --> 0:15:02.960
<v Speaker 3>they see things in the room with a kind of

0:15:03.080 --> 0:15:08.040
<v Speaker 3>dream intrusion on the physical environment. A very very common

0:15:08.120 --> 0:15:12.360
<v Speaker 3>manifestation of this is illusory stains on the ceiling and walls.

0:15:12.800 --> 0:15:18.560
<v Speaker 2>Oh that is fascinating. Yeah, because the other way I

0:15:18.600 --> 0:15:21.920
<v Speaker 2>was thinking about it is like, even in my own house,

0:15:22.200 --> 0:15:24.080
<v Speaker 2>there's like one place in the living room where there's

0:15:24.080 --> 0:15:26.280
<v Speaker 2>a scuff on the ceiling, and I have no idea

0:15:26.360 --> 0:15:29.200
<v Speaker 2>how it got there, Like how did that happen? And

0:15:29.280 --> 0:15:31.640
<v Speaker 2>so on one level in our mind we might think,

0:15:31.960 --> 0:15:37.040
<v Speaker 2>you know, we might be dwelling on this floor ceiling dichotomy.

0:15:37.480 --> 0:15:39.680
<v Speaker 2>So like, if there's a stain on the floor while

0:15:39.680 --> 0:15:41.720
<v Speaker 2>it dripped there, it's spilt there, But how does the

0:15:41.760 --> 0:15:44.600
<v Speaker 2>stain get on the ceiling? What can drip onto the ceiling?

0:15:44.920 --> 0:15:47.880
<v Speaker 2>What can scuff the ceiling? Nothing's walking around up there.

0:15:48.920 --> 0:15:51.480
<v Speaker 2>It must be something uncanny, It must be something from

0:15:51.480 --> 0:15:53.320
<v Speaker 2>some kind of inverted world.

0:15:54.240 --> 0:15:57.720
<v Speaker 3>I personally know the story behind every scuff on my ceiling.

0:15:58.640 --> 0:16:00.760
<v Speaker 3>There it's because I tried to move of the acoustic

0:16:00.800 --> 0:16:03.640
<v Speaker 3>partition wall, and there because I tried to move the

0:16:03.680 --> 0:16:04.240
<v Speaker 3>wall again.

0:16:06.520 --> 0:16:09.080
<v Speaker 2>Well, yes, there are the known scuffs, for sure, and

0:16:09.320 --> 0:16:12.080
<v Speaker 2>the more embarrassing the story behind them, the better we

0:16:12.160 --> 0:16:13.880
<v Speaker 2>remember them.

0:16:13.920 --> 0:16:16.280
<v Speaker 3>Most of mine are connected to trying to turn a

0:16:16.320 --> 0:16:19.080
<v Speaker 3>basement room with a low ceiling into a recording space.

0:16:21.000 --> 0:16:24.560
<v Speaker 2>Now, as far as supernatural creatures of folklore, and legend.

0:16:24.720 --> 0:16:27.000
<v Speaker 2>There may be some other good ones out there, So listeners,

0:16:27.240 --> 0:16:31.320
<v Speaker 2>if you know of other upside down creatures from folklore

0:16:31.560 --> 0:16:34.600
<v Speaker 2>and mythology, and we haven't covered them here on the

0:16:34.600 --> 0:16:36.600
<v Speaker 2>show right in because we would love to hear from you.

0:16:37.240 --> 0:16:40.640
<v Speaker 2>There are, of course various upside down creatures in comic books.

0:16:40.680 --> 0:16:42.960
<v Speaker 2>For example, in fact, I wasn't familiar with this one,

0:16:43.000 --> 0:16:46.200
<v Speaker 2>but I ran across something called upside Down Man in

0:16:46.640 --> 0:16:49.640
<v Speaker 2>DC's Justice League series, and you can look up pictures

0:16:49.640 --> 0:16:52.480
<v Speaker 2>of this creature. Basically a monstrous enemy from another dimension,

0:16:52.920 --> 0:16:56.040
<v Speaker 2>but in the visual medium of comics, he's very often

0:16:56.080 --> 0:16:58.320
<v Speaker 2>depicted in an inverted position.

0:17:00.120 --> 0:17:01.800
<v Speaker 3>Shaped and walking on his hands, or.

0:17:02.240 --> 0:17:05.560
<v Speaker 2>Or often kind of in the frames I was looking at,

0:17:05.600 --> 0:17:08.719
<v Speaker 2>like kind of gigantic and partially outside of the frame,

0:17:09.000 --> 0:17:12.199
<v Speaker 2>but inverted. So it's like you're not necessarily in like

0:17:12.200 --> 0:17:15.080
<v Speaker 2>a physical space, but some sort of either an extra

0:17:15.119 --> 0:17:18.760
<v Speaker 2>dimensional space or sort of like the visual extra dimensional

0:17:18.800 --> 0:17:22.600
<v Speaker 2>space that you find in certain comic book scenes. Well,

0:17:22.600 --> 0:17:24.359
<v Speaker 2>we're not supposed to take it as an actual like

0:17:24.440 --> 0:17:29.120
<v Speaker 2>physical space. It's just representing interaction between two characters, and

0:17:29.160 --> 0:17:31.400
<v Speaker 2>he is often presented upside down.

0:17:32.800 --> 0:17:36.240
<v Speaker 3>This is interesting. I didn't fully get into this for

0:17:36.480 --> 0:17:39.360
<v Speaker 3>this episode, But I was thinking about how often in

0:17:39.960 --> 0:17:46.640
<v Speaker 3>poetry and literature upside downness is a visual and spatial

0:17:46.680 --> 0:17:50.080
<v Speaker 3>metaphor just for wrongness or the thing that should not

0:17:50.280 --> 0:17:53.800
<v Speaker 3>be and is a violation of the order, is something

0:17:53.840 --> 0:17:58.960
<v Speaker 3>that indicates chaos and disorder or moral decay, you know,

0:17:59.119 --> 0:18:02.840
<v Speaker 3>thinking about There's a passage in ts Eliot's The Waste Land,

0:18:02.920 --> 0:18:06.919
<v Speaker 3>which is very The last section of that poem is

0:18:06.960 --> 0:18:10.480
<v Speaker 3>describing like a journey through the desert, the parched landscape

0:18:10.520 --> 0:18:14.240
<v Speaker 3>that has a world gone wrong and destroyed, and he

0:18:14.320 --> 0:18:17.679
<v Speaker 3>talks about coming upon a I think, coming upon a

0:18:17.720 --> 0:18:21.959
<v Speaker 3>city in the desert where bats with baby faces crawl

0:18:22.080 --> 0:18:25.440
<v Speaker 3>upside down, and he sees inverted towers in the air

0:18:25.600 --> 0:18:29.800
<v Speaker 3>hanging upside down. So it seems to be part of

0:18:29.840 --> 0:18:33.240
<v Speaker 3>the metaphor created there is something I mean, it might

0:18:33.320 --> 0:18:36.560
<v Speaker 3>also be an indication of the actual scene imagine, because

0:18:36.560 --> 0:18:38.000
<v Speaker 3>I guess if it's supposed to be in the desert,

0:18:38.000 --> 0:18:40.880
<v Speaker 3>seeing the upside down towers might be like a mirage

0:18:40.960 --> 0:18:44.400
<v Speaker 3>or a fata morgana kind of illusion. But I don't

0:18:44.440 --> 0:18:46.439
<v Speaker 3>know if that's what it's supposed to mean. But I

0:18:46.440 --> 0:18:49.479
<v Speaker 3>think also all the upside downness, especially the bats with

0:18:49.520 --> 0:18:53.840
<v Speaker 3>baby faces. Upside down is clearly supposed to indicate something

0:18:53.960 --> 0:18:58.639
<v Speaker 3>is wrong here. And it's funny because there's nothing especially

0:18:59.080 --> 0:19:02.400
<v Speaker 3>bad about being upside down, but we take it as

0:19:02.400 --> 0:19:04.080
<v Speaker 3>a metaphor for wrongness.

0:19:05.040 --> 0:19:07.600
<v Speaker 2>Yeah, and I feel like baby's upside down. Baby's on

0:19:07.640 --> 0:19:10.359
<v Speaker 2>the ceiling. I've seen that before somewhere, like definitely. I

0:19:10.359 --> 0:19:14.040
<v Speaker 2>guess to a certain extent. In Labyrinth, Toby is towards

0:19:14.080 --> 0:19:17.119
<v Speaker 2>the end when we have big Esher Room. I guess

0:19:17.280 --> 0:19:20.720
<v Speaker 2>Toby's on the ceiling at some point if I'm not mistaken.

0:19:20.760 --> 0:19:22.800
<v Speaker 2>But I feel like there's another film out there where

0:19:23.200 --> 0:19:26.240
<v Speaker 2>some sort of magic baby or superpowered baby is on

0:19:26.280 --> 0:19:29.359
<v Speaker 2>the ceiling. Maybe it's maybe it's Jack Jack from the

0:19:29.359 --> 0:19:34.520
<v Speaker 2>Pixelaro Inredibles, Yeah, Incredibles. Or maybe it's something poltergeisty. I'm

0:19:34.520 --> 0:19:36.320
<v Speaker 2>not sure, but he's ringing a bell.

0:19:37.680 --> 0:19:38.679
<v Speaker 3>Maybe we'll come back to that.

0:19:39.040 --> 0:19:49.880
<v Speaker 4>Yeah, let's see.

0:19:49.880 --> 0:19:52.679
<v Speaker 3>Are you ready to talk about space, Let's do it?

0:19:52.800 --> 0:19:53.080
<v Speaker 2>Yes?

0:19:53.280 --> 0:19:57.119
<v Speaker 3>Okay, So, last time we talked about that scene in

0:19:57.280 --> 0:20:03.080
<v Speaker 3>the Inferno where Dante is only bewildered because again they're

0:20:03.080 --> 0:20:05.600
<v Speaker 3>crawling down the body of Satan and it seems like

0:20:05.640 --> 0:20:09.120
<v Speaker 3>out of nowhere. The world has flipped upside down around him,

0:20:09.600 --> 0:20:14.520
<v Speaker 3>and initially he is without explanation until Virgil gives the explanation,

0:20:15.000 --> 0:20:18.280
<v Speaker 3>which is that because they have passed through the very

0:20:18.440 --> 0:20:21.520
<v Speaker 3>center of the Earth, now the directions of up and

0:20:21.560 --> 0:20:24.520
<v Speaker 3>down have reversed, and so up has become down and

0:20:24.600 --> 0:20:29.399
<v Speaker 3>vice versa. So Dante is describing this moment of overwhelming

0:20:29.560 --> 0:20:34.560
<v Speaker 3>confusion at the sudden subjective inversion of up down continuity,

0:20:35.359 --> 0:20:39.840
<v Speaker 3>and that moment actually brings to mind a similar situation

0:20:40.080 --> 0:20:45.040
<v Speaker 3>that occurs in reality, and that is a common experience

0:20:45.160 --> 0:20:49.480
<v Speaker 3>that astronauts report in microgravity. So I want to talk

0:20:49.520 --> 0:20:55.240
<v Speaker 3>about astronauts something called visual reorientation illusions and something called

0:20:55.280 --> 0:20:59.639
<v Speaker 3>the spider Man illusion. To introduce this idea, I was

0:20:59.680 --> 0:21:03.359
<v Speaker 3>reading a June twenty twenty article in the newspaper of

0:21:03.400 --> 0:21:07.520
<v Speaker 3>the LSU School of Medicine by Leslie Coppo featuring an

0:21:07.520 --> 0:21:10.840
<v Speaker 3>interview with a NASA astronaut, and I think at the

0:21:11.000 --> 0:21:15.040
<v Speaker 3>time an LSU professor of medicine. I believe she might

0:21:15.080 --> 0:21:18.119
<v Speaker 3>be with a different institution now, but a medical doctor

0:21:18.119 --> 0:21:23.280
<v Speaker 3>and professor of medicine named Serena Onen Chancellor, and she's

0:21:23.320 --> 0:21:27.240
<v Speaker 3>talking in this interview about her experience as a flight

0:21:27.280 --> 0:21:30.359
<v Speaker 3>engineer in expeditions fifty six and fifty seven to the

0:21:30.400 --> 0:21:34.520
<v Speaker 3>International Space Station. These were both in twenty eighteen, and

0:21:34.640 --> 0:21:36.919
<v Speaker 3>on a Chancellor talks about how one of the biggest

0:21:37.000 --> 0:21:41.439
<v Speaker 3>challenges of spaceflight and of the especially the early time

0:21:41.600 --> 0:21:46.560
<v Speaker 3>spent at the space station, is the body's adjustment to microgravity.

0:21:46.720 --> 0:21:49.119
<v Speaker 3>This is something we've talked about before, but never with

0:21:49.200 --> 0:21:53.400
<v Speaker 3>this particular angle that I recall. So you know, literally,

0:21:53.480 --> 0:21:56.359
<v Speaker 3>the space station and its occupants are in free fall.

0:21:56.400 --> 0:21:59.800
<v Speaker 3>They're in orbit around the Earth. And since the station

0:22:00.119 --> 0:22:03.200
<v Speaker 3>inhabitants and the station are all falling at the same rate,

0:22:04.160 --> 0:22:07.679
<v Speaker 3>there is no ground inside the station, and there's no

0:22:07.840 --> 0:22:11.680
<v Speaker 3>gravitational queue to tell the astronauts which way is up

0:22:11.800 --> 0:22:14.879
<v Speaker 3>or down. So inside the space station there is no

0:22:15.160 --> 0:22:17.880
<v Speaker 3>up or down except that which you try to sort

0:22:17.880 --> 0:22:22.359
<v Speaker 3>of culturally impose. There's not a physically sensed up or

0:22:22.400 --> 0:22:27.280
<v Speaker 3>down and so on. In Chancellor describes the experience going

0:22:27.320 --> 0:22:31.720
<v Speaker 3>from launch, through the initial burn and into orbit, saying, quote,

0:22:32.240 --> 0:22:35.119
<v Speaker 3>after that eight minutes and forty seconds, when the third

0:22:35.160 --> 0:22:38.720
<v Speaker 3>stage finally cuts off, your brain does not perceive your

0:22:38.880 --> 0:22:41.919
<v Speaker 3>environment the same as it did back on Earth. I

0:22:42.000 --> 0:22:45.520
<v Speaker 3>almost felt like everything was that a forty five degree

0:22:45.720 --> 0:22:49.160
<v Speaker 3>tilt to the left in front of me, and even

0:22:49.200 --> 0:22:52.800
<v Speaker 3>the control panels and the console console in the soused

0:22:52.840 --> 0:22:56.760
<v Speaker 3>vehicle itself appear different. That took a couple of hours

0:22:56.800 --> 0:23:01.480
<v Speaker 3>to resolve. So that's interesting. We can imagine weird sensations

0:23:01.520 --> 0:23:04.439
<v Speaker 3>of being in microgravity, like you can imagine even if

0:23:04.480 --> 0:23:06.640
<v Speaker 3>you haven't felt it yourself. You can sort of imagine

0:23:06.960 --> 0:23:13.200
<v Speaker 3>the feeling of floating, of you know, having this sensation

0:23:13.320 --> 0:23:17.400
<v Speaker 3>of weightlessness. But there are these other things she's describing,

0:23:17.480 --> 0:23:20.159
<v Speaker 3>like suddenly it feels like the world is tilted forty

0:23:20.200 --> 0:23:26.480
<v Speaker 3>five degrees. That's strange and specific, and I thought it's

0:23:26.480 --> 0:23:29.959
<v Speaker 3>interesting how we don't always appreciate that the weirdness of

0:23:30.000 --> 0:23:35.120
<v Speaker 3>being in microgravity is not just a body sensations. It's

0:23:35.359 --> 0:23:40.240
<v Speaker 3>like a new perceptual and even cognitive regime that causes

0:23:40.320 --> 0:23:44.439
<v Speaker 3>perceptual and cognitive distortions. In other words, when you lose

0:23:44.560 --> 0:23:48.160
<v Speaker 3>the ground and the normal gravitational cues for up and down,

0:23:48.600 --> 0:23:52.320
<v Speaker 3>it leads to illusions of the senses and of the mind.

0:23:53.119 --> 0:23:56.880
<v Speaker 3>One of the illusions she describes is very Dante crawling

0:23:56.920 --> 0:24:00.480
<v Speaker 3>on Satan. So she says that a lot of assauts

0:24:00.560 --> 0:24:05.320
<v Speaker 3>report what is called an inversion illusion, so that your

0:24:05.359 --> 0:24:08.280
<v Speaker 3>sense of up and down does not disappear when you

0:24:08.320 --> 0:24:13.520
<v Speaker 3>are in microgravity. It persists, or maybe sometimes suddenly comes

0:24:13.600 --> 0:24:17.959
<v Speaker 3>back very strongly, but inverted, so that no matter what

0:24:18.119 --> 0:24:22.320
<v Speaker 3>position you're in, you feel suddenly like you are hanging

0:24:22.400 --> 0:24:26.280
<v Speaker 3>upside down. And apparently the astronauts sometimes called this the

0:24:26.359 --> 0:24:29.399
<v Speaker 3>Spider Man illusion, I guess especially. I don't know if

0:24:29.400 --> 0:24:31.399
<v Speaker 3>it predates this, but it makes me think of that

0:24:31.480 --> 0:24:34.080
<v Speaker 3>scene in the Toby maguire movie where he's hanging upside

0:24:34.080 --> 0:24:36.159
<v Speaker 3>down with the kiss that's on the poster reserve.

0:24:36.280 --> 0:24:38.000
<v Speaker 2>Oh yeah, the weird upside down kiss.

0:24:38.280 --> 0:24:42.239
<v Speaker 3>But I guess the Spider Man hangs upside down a lot. Yeah, yeah, so,

0:24:42.440 --> 0:24:46.520
<v Speaker 3>yeah called They sometimes call it informally the Spider Man illusion.

0:24:46.560 --> 0:24:48.640
<v Speaker 3>I think equally you could have called it the vampire

0:24:48.680 --> 0:24:53.280
<v Speaker 3>bat illusion or the sloth illusion. It's that there isn't

0:24:53.320 --> 0:24:57.199
<v Speaker 3>necessarily a gravitationally enforced up or down around you, but

0:24:57.240 --> 0:24:59.960
<v Speaker 3>your brain's still trying to make up and down happen,

0:25:00.000 --> 0:25:03.240
<v Speaker 3>and suddenly it just decides I'm hanging upside down. I'm

0:25:03.240 --> 0:25:04.920
<v Speaker 3>hanging upside down, and I don't.

0:25:04.680 --> 0:25:09.720
<v Speaker 2>Know why interesting. I wonder if this is related. I've

0:25:09.760 --> 0:25:14.159
<v Speaker 2>heard of similar things with pilots fine planes, and this

0:25:14.280 --> 0:25:17.400
<v Speaker 2>may be something that's maybe more likely in like high

0:25:17.400 --> 0:25:23.080
<v Speaker 2>performance flight. But you can have your horizon sort of

0:25:23.080 --> 0:25:24.879
<v Speaker 2>messed up and you can think up as down and

0:25:24.920 --> 0:25:25.560
<v Speaker 2>down is up.

0:25:25.720 --> 0:25:28.120
<v Speaker 3>Oh yeah, yeah, Well maybe we can try to make

0:25:28.160 --> 0:25:29.840
<v Speaker 3>more sense of that as we go on, because I

0:25:29.880 --> 0:25:31.439
<v Speaker 3>want to get to a study in a minute. It's

0:25:31.560 --> 0:25:35.280
<v Speaker 3>very much about how visual information interacts with these feelings

0:25:35.280 --> 0:25:38.399
<v Speaker 3>in the body. But on a Chancellor goes on to

0:25:38.440 --> 0:25:42.000
<v Speaker 3>describe more common symptoms of space adaptation. So you have

0:25:42.080 --> 0:25:46.239
<v Speaker 3>things like nausea, lack of appetite you can imagine, and

0:25:46.280 --> 0:25:49.680
<v Speaker 3>then of course the physiological effects of microgravity that we've

0:25:49.680 --> 0:25:51.480
<v Speaker 3>talked about before. I think we've been mentioned in the

0:25:51.560 --> 0:25:55.040
<v Speaker 3>last episode, like stuffiness in the head and upper body.

0:25:55.920 --> 0:25:59.080
<v Speaker 3>And then on Chancellor goes on to say more about

0:25:59.160 --> 0:26:02.600
<v Speaker 3>these confusion and illusions related to the lack of a

0:26:02.600 --> 0:26:05.960
<v Speaker 3>gravitational up and down. In one sense, you can think

0:26:06.000 --> 0:26:09.160
<v Speaker 3>of this unhitching from gravity as a kind of freedom.

0:26:09.640 --> 0:26:12.439
<v Speaker 3>She says, quote, I can do science on any side,

0:26:12.560 --> 0:26:14.960
<v Speaker 3>talking about any side of the module. I can do

0:26:15.000 --> 0:26:17.680
<v Speaker 3>science on the ceiling I can do science on the walls.

0:26:17.800 --> 0:26:20.600
<v Speaker 3>I can be flipped upside down, I can eat upside down.

0:26:20.720 --> 0:26:26.000
<v Speaker 3>It doesn't really matter. But that freedom doesn't necessarily feel

0:26:26.080 --> 0:26:30.560
<v Speaker 3>like freedom. It can also be very difficult, disorienting and uncomfortable,

0:26:30.640 --> 0:26:31.720
<v Speaker 3>especially at first.

0:26:32.119 --> 0:26:34.600
<v Speaker 2>Yeah, and also becomes less of a freedom when you

0:26:34.600 --> 0:26:36.080
<v Speaker 2>have to figure out how to use the restroom and

0:26:36.119 --> 0:26:37.119
<v Speaker 2>things of that nature.

0:26:37.200 --> 0:26:39.800
<v Speaker 3>Yeah, you might need some vacuum assistance there.

0:26:39.880 --> 0:26:43.119
<v Speaker 2>Yeah, because without gravity it can be a little bit

0:26:43.119 --> 0:26:43.600
<v Speaker 2>more difficult.

0:26:43.680 --> 0:26:46.760
<v Speaker 3>Can't do right. So she says that some of the

0:26:46.800 --> 0:26:51.800
<v Speaker 3>astronauts call this early period of adjustment the first reprogramming phase.

0:26:52.400 --> 0:26:55.399
<v Speaker 3>But over time the brain is able to adapt. She says,

0:26:55.400 --> 0:26:58.480
<v Speaker 3>in her experience, the first one to two weeks there

0:26:58.520 --> 0:27:02.159
<v Speaker 3>tends to be a lot of disorder related to the

0:27:02.200 --> 0:27:05.040
<v Speaker 3>brain trying to insist that the head is up and

0:27:05.080 --> 0:27:08.720
<v Speaker 3>the feed are down, but then getting this conflicting sensory data.

0:27:10.000 --> 0:27:13.080
<v Speaker 3>And then usually after three to four weeks, she says,

0:27:13.119 --> 0:27:16.600
<v Speaker 3>the brain adjusts and becomes somewhat more comfortable with this

0:27:16.720 --> 0:27:19.920
<v Speaker 3>upless and downless world. And she says, at that point

0:27:20.000 --> 0:27:23.240
<v Speaker 3>you can kind of move around with less concern for

0:27:23.600 --> 0:27:25.840
<v Speaker 3>up and down where your feed are pointed where your

0:27:25.840 --> 0:27:29.040
<v Speaker 3>head is that sort of thing, and the brain, she says,

0:27:29.080 --> 0:27:34.040
<v Speaker 3>adapts beautifully. So it's interesting to consider both things here

0:27:34.280 --> 0:27:37.800
<v Speaker 3>that in one sense, our brains are kind of stubborn

0:27:37.840 --> 0:27:40.679
<v Speaker 3>and they're trying, and the brain is trying to insist

0:27:40.840 --> 0:27:44.320
<v Speaker 3>on like vertical orientation. I'll talk more about that in

0:27:44.359 --> 0:27:46.040
<v Speaker 3>a paper. I want to mention in just a minute,

0:27:46.960 --> 0:27:50.600
<v Speaker 3>trying to insist on vertical orientation even in a context

0:27:50.640 --> 0:27:53.040
<v Speaker 3>where it doesn't make sense. On the other hand, give

0:27:53.119 --> 0:27:56.840
<v Speaker 3>it time. And the brain is highly adaptable in a way.

0:27:56.880 --> 0:27:58.840
<v Speaker 3>I guess that's kind of our whole lives, isn't it.

0:27:58.880 --> 0:28:03.199
<v Speaker 3>You know, the constant tension between the rigidity and the

0:28:03.200 --> 0:28:04.680
<v Speaker 3>adaptability of our brains.

0:28:05.480 --> 0:28:07.840
<v Speaker 2>Yeah, yeah, it really is. And I don't know if

0:28:07.840 --> 0:28:09.760
<v Speaker 2>we'll get into it in this episode or in the next,

0:28:09.800 --> 0:28:13.320
<v Speaker 2>but yeah, there are other examples of how our brain

0:28:13.440 --> 0:28:16.360
<v Speaker 2>just sort of makes makes the best it can out

0:28:16.359 --> 0:28:19.480
<v Speaker 2>of the sensory data that it is provided with. In

0:28:19.680 --> 0:28:22.280
<v Speaker 2>the sensory data may concern what's up and what's down,

0:28:22.320 --> 0:28:24.920
<v Speaker 2>and the brain is like, all right, we're gonna work

0:28:24.960 --> 0:28:27.440
<v Speaker 2>with it. We're gonna make it work for us.

0:28:27.760 --> 0:28:31.440
<v Speaker 3>So I was reading more about inversion illusions and related

0:28:31.480 --> 0:28:34.960
<v Speaker 3>phenomena among astronauts. In a two thousand and three paper

0:28:35.359 --> 0:28:39.120
<v Speaker 3>that was based on research carried out on the NASA

0:28:39.400 --> 0:28:43.520
<v Speaker 3>Neurolab space lab mission. The paper was called the Role

0:28:43.640 --> 0:28:48.920
<v Speaker 3>of Visual Cues in Microgravity Spatial Orientation. Neurolab was a

0:28:49.160 --> 0:28:52.320
<v Speaker 3>sixteen day space shuttle mission carried out in nineteen ninety

0:28:52.360 --> 0:28:58.040
<v Speaker 3>eight specifically to study the neuroscience of spaceflight, particularly how

0:28:58.360 --> 0:29:03.160
<v Speaker 3>like various brain functions are affected by microgravity. The authors

0:29:03.160 --> 0:29:07.840
<v Speaker 3>of this paper are Charles Ohmann, Ian Howard Theodore Smith,

0:29:07.960 --> 0:29:13.959
<v Speaker 3>Andrew Beal, Alan Natopoff, James Zacker, and Heather Jenkin. And

0:29:14.040 --> 0:29:16.640
<v Speaker 3>so the authors of this paper start off by talking

0:29:16.680 --> 0:29:20.800
<v Speaker 3>about the physiology of how we normally sense up and down.

0:29:21.280 --> 0:29:24.600
<v Speaker 3>Of course, some cues are visual, some are tactle, but

0:29:24.800 --> 0:29:29.479
<v Speaker 3>under normal circumstances, a big part of how your body

0:29:29.680 --> 0:29:33.320
<v Speaker 3>senses constructs a sense of up and down. Really, because

0:29:33.320 --> 0:29:37.200
<v Speaker 3>again there is no in the universe objective thing, no

0:29:37.320 --> 0:29:40.240
<v Speaker 3>such objective thing as up and down. But you know

0:29:40.360 --> 0:29:43.760
<v Speaker 3>it is a subjective feeling created by our relationship to

0:29:43.800 --> 0:29:48.880
<v Speaker 3>the nearest largest gravitational attractor that our brains construct this

0:29:49.000 --> 0:29:52.720
<v Speaker 3>idea of up and down with the help of dedicated

0:29:52.840 --> 0:29:57.840
<v Speaker 3>acceleration sensing organs in the inner ears called odoliths. These

0:29:57.880 --> 0:30:02.760
<v Speaker 3>are little tiny crystals stones made of calcium carbonate, which

0:30:02.800 --> 0:30:06.280
<v Speaker 3>is the same material that makes limestone, cave formations and

0:30:06.400 --> 0:30:09.320
<v Speaker 3>clam shells. So you've got little kind of you know,

0:30:09.360 --> 0:30:13.400
<v Speaker 3>stalactites or stalagmites or clamshell type crystals.

0:30:14.320 --> 0:30:17.920
<v Speaker 2>It's like a little biopunk level, right.

0:30:18.240 --> 0:30:20.360
<v Speaker 3>Yeah, well, I think actually it might be a slightly

0:30:20.360 --> 0:30:23.920
<v Speaker 3>different crystal arrangement, but it's calcium carbonate of one form

0:30:24.000 --> 0:30:27.720
<v Speaker 3>or another. These the odorliths are made of and they're

0:30:27.800 --> 0:30:31.320
<v Speaker 3>suspended in the inner ear in a kind of gel

0:30:31.440 --> 0:30:34.800
<v Speaker 3>or a kind of fluid gel, and they interact with

0:30:34.840 --> 0:30:38.000
<v Speaker 3>these tiny hairs in the inner ear so that they

0:30:38.000 --> 0:30:41.920
<v Speaker 3>are able to sense changes in the speed and orientation

0:30:42.120 --> 0:30:45.880
<v Speaker 3>of the body. So we use these organs to feel

0:30:45.960 --> 0:30:51.480
<v Speaker 3>the sensations of movement, of linear acceleration, of gravity, of

0:30:51.640 --> 0:30:56.560
<v Speaker 3>orientation and balance. And there's an interesting fact about physics

0:30:56.640 --> 0:31:02.360
<v Speaker 3>that is actually indirectly discoverable through studying our inner ear function.

0:31:03.160 --> 0:31:09.680
<v Speaker 3>That fact is that gravity is locally indistinguishable from acceleration.

0:31:10.400 --> 0:31:12.880
<v Speaker 3>This is not exactly true on a large enough scale

0:31:12.880 --> 0:31:15.120
<v Speaker 3>because on a large scale you get interesting things like

0:31:15.160 --> 0:31:19.800
<v Speaker 3>gravity exerting tidal forces on the scale of a human body.

0:31:19.840 --> 0:31:24.200
<v Speaker 3>With a gravitational attractor the size of planet Earth, you're

0:31:24.240 --> 0:31:27.200
<v Speaker 3>not really going to have something like that. So gravity

0:31:27.280 --> 0:31:31.600
<v Speaker 3>is indistinguishable from acceleration. A person standing on the ground

0:31:31.720 --> 0:31:34.680
<v Speaker 3>feeling Earth's gravity of nine point eight meters per second

0:31:34.680 --> 0:31:39.840
<v Speaker 3>squared feels almost exactly the same force as somebody standing

0:31:40.080 --> 0:31:43.000
<v Speaker 3>head up in a rocket ship that is accelerating at

0:31:43.080 --> 0:31:45.959
<v Speaker 3>nine point eight meters per second squared. To that person,

0:31:46.000 --> 0:31:49.640
<v Speaker 3>the forces are basically the same, and that's why the

0:31:49.760 --> 0:31:52.200
<v Speaker 3>organs that we use to feel the pull of gravity

0:31:52.240 --> 0:31:54.680
<v Speaker 3>and orient our bodies with respect to up and down

0:31:55.040 --> 0:31:58.320
<v Speaker 3>are the same organs we use to feel the sensation

0:31:58.440 --> 0:32:01.720
<v Speaker 3>of linear acceleration because locally they are the same thing.

0:32:02.680 --> 0:32:06.720
<v Speaker 3>So on Earth at regular altitude, gravity is experienced as

0:32:06.760 --> 0:32:09.560
<v Speaker 3>this constant acceleration toward the ground.

0:32:10.160 --> 0:32:12.040
<v Speaker 2>And as we've discussed on the show before, that's why

0:32:12.080 --> 0:32:20.840
<v Speaker 2>some of these artificial gravity proposals would seem to be functional,

0:32:21.360 --> 0:32:26.120
<v Speaker 2>like artificial gravity via propulsion in a space ship, where

0:32:26.120 --> 0:32:29.640
<v Speaker 2>you have a spaceship that's like a skyscraper and you

0:32:30.040 --> 0:32:33.080
<v Speaker 2>feel as if you have gravitational force on each of

0:32:33.120 --> 0:32:36.480
<v Speaker 2>those floors, or of course the big double tourist situation

0:32:36.640 --> 0:32:38.080
<v Speaker 2>like we have in two thousand and one.

0:32:38.560 --> 0:32:40.640
<v Speaker 3>Yeah, spinning surface if it's big enough.

0:32:40.880 --> 0:32:43.160
<v Speaker 2>Yeah, as we discussed in those episodes, you'll find them

0:32:43.160 --> 0:32:45.400
<v Speaker 2>in the archive. Yeah, there are a lot of additional

0:32:45.400 --> 0:32:47.680
<v Speaker 2>factors to concern yourself with.

0:32:48.000 --> 0:32:51.720
<v Speaker 3>That's right. So acceleration can function as a pretty much

0:32:52.160 --> 0:32:54.720
<v Speaker 3>perfect substitute for gravity if you get the you know,

0:32:54.720 --> 0:33:07.200
<v Speaker 3>if you get all the details right. This is where

0:33:07.240 --> 0:33:10.640
<v Speaker 3>things get wild in space. About the space if you

0:33:10.720 --> 0:33:14.280
<v Speaker 3>don't have artificial gravity, if you are in freefall like

0:33:14.360 --> 0:33:17.480
<v Speaker 3>the astronauts and the ISS are, or if you're in

0:33:17.680 --> 0:33:21.440
<v Speaker 3>orbit in a space Shuttle mission. So when astronauts are

0:33:21.440 --> 0:33:25.600
<v Speaker 3>in freefall in orbit around the Earth, the authors say

0:33:25.640 --> 0:33:30.720
<v Speaker 3>that the odoliths quote float into unusual positions and tilting

0:33:30.760 --> 0:33:34.680
<v Speaker 3>the head produces no sustained otolith displacement the way it

0:33:34.720 --> 0:33:38.719
<v Speaker 3>does on Earth. The unusual signals from the otolith organs

0:33:38.720 --> 0:33:42.320
<v Speaker 3>and zero G are apparently not sufficient to produce major

0:33:42.400 --> 0:33:46.080
<v Speaker 3>changes in the inner ear to eye reflexes that allow

0:33:46.200 --> 0:33:48.880
<v Speaker 3>the eyes to stay fixed on an object while the

0:33:48.880 --> 0:33:54.600
<v Speaker 3>body is moving. Also, although astronauts typically don't report sensations

0:33:54.600 --> 0:33:59.880
<v Speaker 3>of falling. They are susceptible to illusions about body orientation.

0:34:00.760 --> 0:34:04.880
<v Speaker 3>So what are these other illusions about body movement and orientation.

0:34:05.480 --> 0:34:07.680
<v Speaker 3>The authors talk about one that is the same thing

0:34:07.720 --> 0:34:10.640
<v Speaker 3>that On and Chancell are called the spider Man illusion.

0:34:11.360 --> 0:34:14.560
<v Speaker 3>The authors here refer to these as inversion illusions, and

0:34:14.600 --> 0:34:17.759
<v Speaker 3>they say that a lot of astronauts report these immediately

0:34:17.840 --> 0:34:21.000
<v Speaker 3>after reaching orbit from the initial launch. So they'll be

0:34:21.200 --> 0:34:24.120
<v Speaker 3>seated in their launch position in the cabin and then

0:34:24.200 --> 0:34:28.200
<v Speaker 3>suddenly get the overwhelming sensation that they are actually hanging

0:34:28.320 --> 0:34:32.560
<v Speaker 3>upside down from the ceiling. Inversion illusions can happen with

0:34:32.600 --> 0:34:36.840
<v Speaker 3>the eyes open or closed, and the illusion most often

0:34:36.920 --> 0:34:39.600
<v Speaker 3>lasts for only a day or two before it starts

0:34:39.600 --> 0:34:43.319
<v Speaker 3>to subside. But you can imagine that it could have

0:34:43.440 --> 0:34:47.000
<v Speaker 3>major potential to interfere with crew members' ability to stay

0:34:47.000 --> 0:34:50.160
<v Speaker 3>focused on the task. So this is a this is

0:34:50.200 --> 0:34:53.160
<v Speaker 3>not without consequence. It's not just like a weird little thing.

0:34:53.239 --> 0:34:57.040
<v Speaker 3>It's like, you know, you don't want you don't want

0:34:57.080 --> 0:34:59.080
<v Speaker 3>to be experiencing this if you don't have to.

0:34:59.520 --> 0:35:02.279
<v Speaker 2>Right, Generally, there is a lot to do on a

0:35:02.320 --> 0:35:06.760
<v Speaker 2>mission like this, and it's you know, it's an extreme environment,

0:35:06.800 --> 0:35:08.480
<v Speaker 2>you need to be on your toes and ready to

0:35:08.520 --> 0:35:10.280
<v Speaker 2>jump in and work on things. And so the idea

0:35:10.280 --> 0:35:13.359
<v Speaker 2>of being disoriented for an extended period of time right

0:35:13.400 --> 0:35:17.640
<v Speaker 2>at the top, that doesn't sound like a positive prospect.

0:35:18.400 --> 0:35:21.800
<v Speaker 3>There's another type of illusion the authors talk about called

0:35:22.200 --> 0:35:28.359
<v Speaker 3>visual reorientation illusions or VRIS. These are illusions that can

0:35:28.400 --> 0:35:32.560
<v Speaker 3>happen when someone is in a microgravity environment and they

0:35:32.600 --> 0:35:38.640
<v Speaker 3>get visual cues that conflict with their established working sense

0:35:38.760 --> 0:35:43.400
<v Speaker 3>of where up and down are. So that established working

0:35:43.480 --> 0:35:46.000
<v Speaker 3>sense of up and down is what the authors of

0:35:46.040 --> 0:35:51.359
<v Speaker 3>the paper called the astronauts subjective vertical or SV. Now,

0:35:51.360 --> 0:35:54.760
<v Speaker 3>we don't usually need to think about our subjective vertical

0:35:54.880 --> 0:35:57.480
<v Speaker 3>because it's going to be pretty you know, for most

0:35:57.480 --> 0:36:00.400
<v Speaker 3>people who unless you have some kind of disorder of

0:36:00.440 --> 0:36:02.800
<v Speaker 3>the inner ear or something like, you know, something going

0:36:02.840 --> 0:36:05.799
<v Speaker 3>on most of the time. For most people, your subjective

0:36:05.880 --> 0:36:08.920
<v Speaker 3>vertical is also going to be the same as everybody

0:36:08.920 --> 0:36:11.919
<v Speaker 3>else's subjective vertical around you. You know, down is where

0:36:11.920 --> 0:36:14.400
<v Speaker 3>your feet are pointed, up is where your head is pointed.

0:36:14.719 --> 0:36:19.319
<v Speaker 3>Is pretty straightforward. But the brain maintains a sense of

0:36:19.360 --> 0:36:24.279
<v Speaker 3>a subjective vertical even in a microgravity environment. So even

0:36:24.320 --> 0:36:27.600
<v Speaker 3>though you no longer feel up and down with your odoliths.

0:36:28.200 --> 0:36:30.919
<v Speaker 3>Your brain still insists we got to find up and down,

0:36:30.960 --> 0:36:34.879
<v Speaker 3>which way's up, which ways down? And the brain might

0:36:35.000 --> 0:36:38.240
<v Speaker 3>decide that this wall of the module is the floor

0:36:38.320 --> 0:36:41.680
<v Speaker 3>and the opposite wall is the ceiling. But then imagine,

0:36:41.719 --> 0:36:44.279
<v Speaker 3>so you're working on that assumption. You figured out, okay,

0:36:44.320 --> 0:36:47.480
<v Speaker 3>here's the floor, here's the ceiling. But then you suddenly

0:36:47.800 --> 0:36:52.720
<v Speaker 3>see visual information that conflicts with your brain subjective vertical,

0:36:53.120 --> 0:36:57.400
<v Speaker 3>like you see another astronaut floating upside down from your perspective,

0:36:57.880 --> 0:37:02.080
<v Speaker 3>or you see a dropped object failing to fall towards

0:37:02.120 --> 0:37:05.120
<v Speaker 3>your floor, you know, because gravity isn't there, so it's

0:37:05.160 --> 0:37:08.120
<v Speaker 3>not going to fall. And then suddenly the brain says, oh, no,

0:37:08.280 --> 0:37:12.360
<v Speaker 3>something is wrong, and you get a visual reorientation illusion

0:37:12.760 --> 0:37:18.160
<v Speaker 3>where your subjective vertical instantly flips and the floor becomes

0:37:18.200 --> 0:37:22.080
<v Speaker 3>the ceiling and now you are upside down. This is

0:37:22.120 --> 0:37:25.880
<v Speaker 3>described as an unpleasant experience that can trigger attacks of

0:37:25.960 --> 0:37:29.120
<v Speaker 3>nausea and motion sickness, especially in the first week or

0:37:29.160 --> 0:37:34.600
<v Speaker 3>so of orbital conditions, but the sense of direction problems

0:37:34.640 --> 0:37:38.239
<v Speaker 3>can persist for months. The authors say that vris were

0:37:38.239 --> 0:37:42.560
<v Speaker 3>first reported by a Russian cosmonaut named German Titov in

0:37:42.680 --> 0:37:45.920
<v Speaker 3>nineteen sixty one, and by the nineteen nineties they were

0:37:45.960 --> 0:37:48.880
<v Speaker 3>well known to Skylab and Space Lab crews. They were

0:37:48.880 --> 0:37:52.480
<v Speaker 3>often known as the downs. So you get them the

0:37:52.520 --> 0:37:55.719
<v Speaker 3>downs suddenly, oh my down is up? Now, Uh, don't

0:37:55.719 --> 0:38:01.200
<v Speaker 3>feel good. So the authors point out that are usually

0:38:01.480 --> 0:38:06.560
<v Speaker 3>spontaneous and unwelcome when they happen, but that astronauts have

0:38:06.719 --> 0:38:11.000
<v Speaker 3>reported that they can be either triggered or sometimes reversed

0:38:11.080 --> 0:38:16.400
<v Speaker 3>by intentional cognitive effort. So you're in microgravity and you

0:38:16.800 --> 0:38:19.640
<v Speaker 3>force yourself to think about the floor and the ceiling,

0:38:19.960 --> 0:38:24.280
<v Speaker 3>you can sometimes cause your subjective vertical to flip on purpose,

0:38:25.239 --> 0:38:28.000
<v Speaker 3>which I wonder exactly. I don't know exactly how that feels,

0:38:28.040 --> 0:38:30.080
<v Speaker 3>but I'm imagining it kind of like the magic eye.

0:38:31.000 --> 0:38:34.080
<v Speaker 2>Yeah, yeah, so yeah, you look at just the right stimuli,

0:38:34.320 --> 0:38:36.400
<v Speaker 2>or if you bring a Tsliot bat baby with you

0:38:36.520 --> 0:38:39.320
<v Speaker 2>on the flight there, you you just stick that sucker

0:38:39.400 --> 0:38:41.799
<v Speaker 2>up to what may seem like the ceiling and damn

0:38:41.880 --> 0:38:42.400
<v Speaker 2>you're triggered.

0:38:42.760 --> 0:38:47.480
<v Speaker 3>Yeah. But interesting question here, like since gravity no longer

0:38:47.640 --> 0:38:51.440
<v Speaker 3>rains in the orbital environment, so objects you drop an

0:38:51.440 --> 0:38:54.960
<v Speaker 3>object and it doesn't fall, you might just expect the

0:38:54.960 --> 0:38:58.560
<v Speaker 3>brain to not care about which direction is down, but

0:38:58.880 --> 0:39:02.880
<v Speaker 3>reports from astronauts indicate that the usually the brain, especially

0:39:02.880 --> 0:39:06.280
<v Speaker 3>at first, still tries to maintain the sense of the vertical.

0:39:06.600 --> 0:39:09.040
<v Speaker 3>It's just part of our programming and it's hard to shake.

0:39:09.640 --> 0:39:09.879
<v Speaker 4>Yeah.

0:39:09.920 --> 0:39:14.160
<v Speaker 2>Again, it is the it is where we evolved as being.

0:39:14.280 --> 0:39:18.160
<v Speaker 2>So it makes sense that it's kind of you know,

0:39:18.200 --> 0:39:21.160
<v Speaker 2>stitched in, hardwired to our understanding to or even are

0:39:21.239 --> 0:39:23.359
<v Speaker 2>like an understanding of what our body is and where

0:39:23.360 --> 0:39:24.360
<v Speaker 2>our body is in space.

0:39:24.680 --> 0:39:29.840
<v Speaker 3>Yeah. So, the authors point out that experiments on Earth

0:39:30.120 --> 0:39:36.719
<v Speaker 3>have demonstrated that people substantially use visual information and not

0:39:37.239 --> 0:39:40.720
<v Speaker 3>just their inner ear organs, to determine which way is down,

0:39:41.280 --> 0:39:43.680
<v Speaker 3>and they cite a bunch of examples of this. One

0:39:43.680 --> 0:39:48.000
<v Speaker 3>thing they talk about is experiments where scientists build a

0:39:48.120 --> 0:39:51.880
<v Speaker 3>slightly tilted room or build a tumbling room where they

0:39:51.880 --> 0:39:55.920
<v Speaker 3>can adjust the direction. So you can, you know, imagine

0:39:55.920 --> 0:39:57.640
<v Speaker 3>being in a room where the floor and all of

0:39:57.640 --> 0:40:00.560
<v Speaker 3>the objects in the room are not quite flat. They

0:40:00.880 --> 0:40:03.440
<v Speaker 3>maybe it's tilted a little bit to the side. And

0:40:03.480 --> 0:40:06.239
<v Speaker 3>so they put people in environments like this and have

0:40:06.440 --> 0:40:09.400
<v Speaker 3>them try to find and point to up and down.

0:40:10.160 --> 0:40:14.560
<v Speaker 3>Often the visual information can take over. When asked to

0:40:14.600 --> 0:40:18.200
<v Speaker 3>point down, people in a tilted room will point not

0:40:18.400 --> 0:40:21.759
<v Speaker 3>toward the gravitational down, but toward the floor of the

0:40:21.800 --> 0:40:26.040
<v Speaker 3>tilted room. So in this case, visual information is somewhat

0:40:26.120 --> 0:40:29.160
<v Speaker 3>overriding the felt information from the odoliths.

0:40:30.080 --> 0:40:32.400
<v Speaker 2>Yeah. Yeah, And I think if anyone out there, if

0:40:32.400 --> 0:40:36.279
<v Speaker 2>you've got to any like high end haunted attraction or

0:40:36.400 --> 0:40:39.439
<v Speaker 2>some of the various like Museum of Illusions out there,

0:40:39.960 --> 0:40:43.839
<v Speaker 2>you'll encounter rooms like this designed to throw off your

0:40:43.880 --> 0:40:47.920
<v Speaker 2>perception of up and down, tilted floors, spinning rooms, and

0:40:47.960 --> 0:40:48.480
<v Speaker 2>so forth.

0:40:48.800 --> 0:40:51.120
<v Speaker 3>Yeah. Yeah, In fact, I've got something about that in

0:40:51.160 --> 0:40:54.360
<v Speaker 3>just a minute. But from this, the author's posit that

0:40:54.440 --> 0:40:58.960
<v Speaker 3>the subjective vertical is actually established by a combination of cues.

0:40:59.000 --> 0:41:04.000
<v Speaker 3>The brain is is consulting an interaction between sensory information,

0:41:04.520 --> 0:41:08.960
<v Speaker 3>not just the inner ear, but also visual information and

0:41:09.480 --> 0:41:13.400
<v Speaker 3>maybe other things too, And usually this information is in harmony,

0:41:13.480 --> 0:41:16.400
<v Speaker 3>so it doesn't cause a problem, but in microgravity it

0:41:16.440 --> 0:41:18.839
<v Speaker 3>can be wildly out of wax, so it does cause

0:41:18.880 --> 0:41:22.919
<v Speaker 3>a problem. Another interesting fact, this is just a little

0:41:22.960 --> 0:41:25.400
<v Speaker 3>side note, not really relevant to us, but the authors

0:41:25.440 --> 0:41:30.759
<v Speaker 3>point out that there are minor gravity sensing capabilities outside

0:41:30.800 --> 0:41:33.440
<v Speaker 3>the organs of the inner ear. They cite that the

0:41:33.640 --> 0:41:38.720
<v Speaker 3>kidneys and the cardiovascular system have some ability to sense

0:41:38.760 --> 0:41:42.919
<v Speaker 3>gravitational orientation, and they don't go into detail about why

0:41:43.000 --> 0:41:44.360
<v Speaker 3>that is. But I wonder if I has to do

0:41:44.400 --> 0:41:47.759
<v Speaker 3>with fluid flows the fluid is it's going to be

0:41:47.840 --> 0:41:49.640
<v Speaker 3>gravitationally attracted to the ground.

0:41:50.080 --> 0:41:52.920
<v Speaker 2>Yeah, I mean that seems like the most likely explanation.

0:41:53.080 --> 0:41:58.200
<v Speaker 3>Yeah, So if the brain uses visual information to determine

0:41:58.320 --> 0:42:01.919
<v Speaker 3>up and down, what are the main visual cues, Because

0:42:01.960 --> 0:42:06.120
<v Speaker 3>there aren't necessarily objective up and down that we can

0:42:06.200 --> 0:42:09.600
<v Speaker 3>see with our eyes, you know, it depends actually on

0:42:09.760 --> 0:42:13.080
<v Speaker 3>knowing the context of the environment around you. So we

0:42:13.200 --> 0:42:18.400
<v Speaker 3>might consult familiar objects, like we expect to see ceiling

0:42:18.520 --> 0:42:21.719
<v Speaker 3>type objects like light fixtures up, and we expect to

0:42:21.760 --> 0:42:25.640
<v Speaker 3>see floor type objects like furniture down. We expect to

0:42:25.680 --> 0:42:28.640
<v Speaker 3>see writing right side up, We expect to see a

0:42:28.719 --> 0:42:31.839
<v Speaker 3>drinking glass with the open end pointed up. That sort

0:42:31.880 --> 0:42:35.759
<v Speaker 3>of thing. The other thing is our own bodies. We

0:42:35.800 --> 0:42:38.200
<v Speaker 3>have a strong tendency to feel that our feet are

0:42:38.239 --> 0:42:43.239
<v Speaker 3>pointed down unless other information overwhelms that. And there's an

0:42:43.239 --> 0:42:47.040
<v Speaker 3>interesting section in the intro here about differences in how

0:42:47.120 --> 0:42:52.520
<v Speaker 3>the brain handles disagreement between the senses establishing the subjective vertical.

0:42:52.920 --> 0:42:57.719
<v Speaker 3>Depending on how big the disagreement is. Quote, if there

0:42:57.760 --> 0:43:02.320
<v Speaker 3>are minor directional differences between the gravity receptor and visual

0:43:02.360 --> 0:43:05.880
<v Speaker 3>cues to the vertical, the brain apparently compromises, and the

0:43:06.040 --> 0:43:11.239
<v Speaker 3>SV the subjective vertical points to an intermediate direction. So

0:43:12.360 --> 0:43:15.600
<v Speaker 3>quote the remaining component of gravity is then perceived as

0:43:15.640 --> 0:43:20.400
<v Speaker 3>a mysterious force pulling the body to one side. They

0:43:20.440 --> 0:43:24.440
<v Speaker 3>say this illusion can be readily experienced in houses tilted

0:43:24.560 --> 0:43:27.239
<v Speaker 3>by an earthquake. And this brings us back to what

0:43:27.280 --> 0:43:29.600
<v Speaker 3>you were saying rob about, like the haunted house or

0:43:29.640 --> 0:43:34.000
<v Speaker 3>the Museum of Illusions type room, the room that's tilted.

0:43:34.960 --> 0:43:37.919
<v Speaker 3>I know exactly what they're talking about, this mysterious force.

0:43:38.320 --> 0:43:41.960
<v Speaker 3>Something feels wrong. There's some kind of uncanny physics that

0:43:42.040 --> 0:43:43.920
<v Speaker 3>feels like it's pulling you to the side.

0:43:44.400 --> 0:43:47.239
<v Speaker 2>Yeah, yeah, absolutely, I have felt this.

0:43:47.680 --> 0:43:50.560
<v Speaker 3>Yeah. And then the quote goes on to say, if

0:43:50.600 --> 0:43:53.520
<v Speaker 3>the disparity in direction of the gravity receptor and the

0:43:54.080 --> 0:43:58.839
<v Speaker 3>visual verticals is large, one sensory modality or the other

0:43:59.080 --> 0:44:03.279
<v Speaker 3>typically captures the subjective vertical. So one just takes over

0:44:03.400 --> 0:44:07.360
<v Speaker 3>and says, vertical is mine. Now, they say, quote Tilting

0:44:07.400 --> 0:44:11.640
<v Speaker 3>the head away from the gravitationally erect position enhances the

0:44:11.640 --> 0:44:15.680
<v Speaker 3>effect of visual cues. There seem to be consistent differences

0:44:15.760 --> 0:44:20.600
<v Speaker 3>between individuals in the relative weighing assigned to visual versus

0:44:20.600 --> 0:44:25.759
<v Speaker 3>gravity receptor cues. Older individuals appear more susceptible to visually

0:44:25.800 --> 0:44:31.719
<v Speaker 3>induced tilt. Scene motion enhances visually induced tilt for most subjects.

0:44:32.320 --> 0:44:34.400
<v Speaker 3>So I thought that was really interesting too, about like

0:44:34.440 --> 0:44:38.320
<v Speaker 3>these individual differences. I am now very curious about myself,

0:44:38.360 --> 0:44:40.200
<v Speaker 3>and I feel like I don't have an easy way

0:44:40.200 --> 0:44:45.400
<v Speaker 3>to know. Is my personal subjective vertical more doggedly tied

0:44:45.440 --> 0:44:48.560
<v Speaker 3>to the gravity receptors and the inner ear, or is

0:44:48.600 --> 0:44:51.960
<v Speaker 3>it more susceptible to visual information? I would like to

0:44:52.000 --> 0:44:53.440
<v Speaker 3>know what kind of up and down man?

0:44:53.520 --> 0:44:56.440
<v Speaker 2>I am, well, you know, maybe you got to wait

0:44:56.440 --> 0:44:58.920
<v Speaker 2>till October on this one and find a good uh

0:44:58.960 --> 0:45:00.160
<v Speaker 2>hanta detraction of it.

0:45:00.160 --> 0:45:04.400
<v Speaker 3>It maybe, But again they do say that visual information

0:45:04.520 --> 0:45:07.600
<v Speaker 3>tends to be stronger if you are older. I don't

0:45:07.600 --> 0:45:09.839
<v Speaker 3>know if that means visual information is stronger or if

0:45:09.880 --> 0:45:13.200
<v Speaker 3>that means the inner ear is weaker. And it also,

0:45:13.360 --> 0:45:17.160
<v Speaker 3>visual information tends to be more powerful if you are moving,

0:45:17.440 --> 0:45:19.800
<v Speaker 3>or if the scene around you appears to be moving.

0:45:29.880 --> 0:45:32.200
<v Speaker 3>So anyway, the authors of the study, they talk about

0:45:32.239 --> 0:45:35.399
<v Speaker 3>some more interesting things in their introduction, but I guess

0:45:35.440 --> 0:45:38.040
<v Speaker 3>we should get to their finding. So the mission is

0:45:38.040 --> 0:45:39.960
<v Speaker 3>not like a huge sample size. There was sort of

0:45:40.400 --> 0:45:42.600
<v Speaker 3>a pilot study of this sort of thing, and this

0:45:42.640 --> 0:45:46.080
<v Speaker 3>has been followed up on with larger studies of astronauts

0:45:46.600 --> 0:45:50.920
<v Speaker 3>over time. But this initial test used the four adult

0:45:50.920 --> 0:45:54.560
<v Speaker 3>male astronauts of this mission in orbit with a variety

0:45:54.600 --> 0:45:59.000
<v Speaker 3>of experiments, many including virtual reality goggles as a stimulus,

0:46:01.000 --> 0:46:04.640
<v Speaker 3>and their major findings were as follows. Again, there were

0:46:04.760 --> 0:46:09.239
<v Speaker 3>fairly strong individual differences in how people created their subjective

0:46:09.320 --> 0:46:13.879
<v Speaker 3>vertical and these tended to continue during spaceflight, though one

0:46:13.920 --> 0:46:17.480
<v Speaker 3>astronaut became more dependent on visual cues to determine up

0:46:17.520 --> 0:46:21.880
<v Speaker 3>and down while in microgravity. They say that they found

0:46:21.920 --> 0:46:25.880
<v Speaker 3>astronauts in microgravity became a lot more vulnerable to what

0:46:25.920 --> 0:46:30.279
<v Speaker 3>they call circular self motion illusions, the illusion that you

0:46:30.320 --> 0:46:34.640
<v Speaker 3>are spinning or rolling triggered by visual cues of rolling.

0:46:35.800 --> 0:46:39.880
<v Speaker 3>And then they also looked at visual cues associated with

0:46:40.080 --> 0:46:45.200
<v Speaker 3>linear movement through a scene. So this was studying quote

0:46:45.440 --> 0:46:49.839
<v Speaker 3>whether a virtual scene moving past the subject produces a

0:46:49.880 --> 0:46:56.440
<v Speaker 3>stronger linear self motion illusion. So imagine your stationary in microgravity,

0:46:56.480 --> 0:47:00.239
<v Speaker 3>you put on virtual reality goggles that suggest you are

0:47:00.320 --> 0:47:04.600
<v Speaker 3>moving forward linear motion through a scene. Do you feel

0:47:04.640 --> 0:47:07.360
<v Speaker 3>in your body like you're actually moving through a scene?

0:47:07.680 --> 0:47:12.080
<v Speaker 3>The research found yes, absolutely, in microgravity they experienced this

0:47:12.160 --> 0:47:16.920
<v Speaker 3>feeling of gliding like a ghost or like the camera

0:47:17.160 --> 0:47:21.120
<v Speaker 3>in Dario Argento's Deep Red gliding through the scene forward.

0:47:21.520 --> 0:47:25.600
<v Speaker 3>This feeling of illusory linear motion came on faster, and

0:47:25.640 --> 0:47:28.880
<v Speaker 3>it was stronger when triggered by the virtual reality in

0:47:29.040 --> 0:47:33.759
<v Speaker 3>these in the microgravity conditions. The study also found that

0:47:33.800 --> 0:47:37.839
<v Speaker 3>these self motion illusions could be somewhat counteracted by having

0:47:37.920 --> 0:47:42.000
<v Speaker 3>the astronauts where force springs that press on the body

0:47:42.360 --> 0:47:45.640
<v Speaker 3>to simulate gravity. I thought this was interesting. So even

0:47:45.800 --> 0:47:51.480
<v Speaker 3>rather crude approximate approximations of gravitational force that I hope

0:47:51.520 --> 0:47:53.480
<v Speaker 3>I'm right about this from what I could tell, would

0:47:53.560 --> 0:47:56.120
<v Speaker 3>not really be acting on the inner ear organs. It

0:47:56.120 --> 0:47:58.680
<v Speaker 3>would be like pressing on maybe the shoulders or the hips,

0:47:58.719 --> 0:48:01.839
<v Speaker 3>pressing on the body with springing. That even that kind

0:48:01.880 --> 0:48:06.240
<v Speaker 3>of crude approximation, if I'm understanding correctly, could help reduce

0:48:06.400 --> 0:48:07.640
<v Speaker 3>self motion illusions.

0:48:08.440 --> 0:48:08.920
<v Speaker 2>Interesting.

0:48:08.880 --> 0:48:13.640
<v Speaker 3>And finally, the study also found that changing the subjective

0:48:13.719 --> 0:48:18.520
<v Speaker 3>vertical This was really interesting to me. Changing which direction

0:48:18.680 --> 0:48:22.719
<v Speaker 3>you feel is up or down could cause changes in

0:48:22.800 --> 0:48:28.680
<v Speaker 3>how astronauts perceived objects. So not changing how the object looks,

0:48:28.680 --> 0:48:33.120
<v Speaker 3>but just changing which way the astronaut feels the ceiling

0:48:33.200 --> 0:48:36.520
<v Speaker 3>or the floor is. That could cause astronauts to make

0:48:36.600 --> 0:48:42.120
<v Speaker 3>different judgments about whether a curved surface is convex or concave.

0:48:43.520 --> 0:48:46.920
<v Speaker 3>This apparently depends on where you subjectively believe the floor is,

0:48:47.200 --> 0:48:51.480
<v Speaker 3>but even more interestingly, on object recognition. So sometimes it

0:48:51.520 --> 0:48:55.680
<v Speaker 3>could become harder to recognize a familiar object that you're

0:48:55.760 --> 0:48:59.120
<v Speaker 3>used to seeing if you have inverted your sense of

0:48:59.160 --> 0:49:04.200
<v Speaker 3>where the floor is. You can imagine again in space

0:49:04.239 --> 0:49:08.000
<v Speaker 3>that being able to recognize familiar objects is actually quite important,

0:49:08.080 --> 0:49:10.640
<v Speaker 3>especially if you are manning controls or trying to do

0:49:10.719 --> 0:49:15.759
<v Speaker 3>any kind of mechanical task or you know, scientific pass Yeah,

0:49:15.800 --> 0:49:20.600
<v Speaker 3>so like suddenly recognizing things in your environment. Again, nothing

0:49:20.719 --> 0:49:24.040
<v Speaker 3>that you are physically looking at has changed, but your

0:49:24.040 --> 0:49:26.640
<v Speaker 3>brain flips and now the floor is the ceiling, and

0:49:26.680 --> 0:49:30.600
<v Speaker 3>now what the way you recognize things is different the

0:49:30.680 --> 0:49:35.320
<v Speaker 3>author's right quote. Overall results show that most astronauts become

0:49:35.480 --> 0:49:40.319
<v Speaker 3>more dependent on dynamic visual motion cues, and some become

0:49:40.400 --> 0:49:45.480
<v Speaker 3>responsive to stationary orientation cues. The direction of the subjective

0:49:45.560 --> 0:49:51.280
<v Speaker 3>vertical is labile in the absence of gravity. So interesting

0:49:51.400 --> 0:49:56.080
<v Speaker 3>that so much depends on up and down. Even in

0:49:56.120 --> 0:49:59.279
<v Speaker 3>an environment where up and down cease to have any

0:49:59.320 --> 0:50:04.320
<v Speaker 3>gravitational relevance. You're not stuck to the floor, objects don't

0:50:04.360 --> 0:50:07.479
<v Speaker 3>fall when you drop them, and yet your brain can't

0:50:07.560 --> 0:50:10.480
<v Speaker 3>let up and down go. It still relies on the

0:50:10.560 --> 0:50:15.280
<v Speaker 3>sense of up and down to recognize things in its environment,

0:50:15.320 --> 0:50:19.800
<v Speaker 3>to interpret visual cues like object shading, to interpret which

0:50:19.880 --> 0:50:22.719
<v Speaker 3>way a surface is curved. That depends on where you

0:50:22.760 --> 0:50:26.399
<v Speaker 3>think the floor is. To interpret do I recognize this

0:50:26.520 --> 0:50:29.320
<v Speaker 3>or not? Do I know what this tool is? Depends

0:50:29.360 --> 0:50:31.960
<v Speaker 3>on where you think the floor is. And to understand

0:50:32.040 --> 0:50:34.000
<v Speaker 3>how the body itself is moving.

0:50:34.719 --> 0:50:38.040
<v Speaker 2>Yeah, it's fascinating, and you know, it comes back to

0:50:38.080 --> 0:50:41.600
<v Speaker 2>something that I thought about before, Like, you know, we

0:50:41.680 --> 0:50:43.680
<v Speaker 2>have all of these we've gone over all these different

0:50:43.680 --> 0:50:46.279
<v Speaker 2>ways that the body is thrown for a loop when

0:50:46.320 --> 0:50:49.640
<v Speaker 2>it's taken out of a lot of Earth gravity and

0:50:49.719 --> 0:50:53.800
<v Speaker 2>placed in a microgravity environment. But at the same time,

0:50:54.400 --> 0:50:57.080
<v Speaker 2>it's also kind of alarming in its own way, Like

0:50:57.120 --> 0:50:59.400
<v Speaker 2>we can totally live up there. Granted, we have to

0:50:59.440 --> 0:51:02.399
<v Speaker 2>do things like bring our own portion of the atmosphere

0:51:02.440 --> 0:51:06.919
<v Speaker 2>with us, you know, because up there, our appropriate portion

0:51:06.960 --> 0:51:10.359
<v Speaker 2>of the atmosphere is not you know, it's not gravitationally bound.

0:51:10.400 --> 0:51:12.400
<v Speaker 2>You know, we have to bring it with us obviously.

0:51:12.760 --> 0:51:15.480
<v Speaker 2>But but we can actually go up there if we

0:51:15.560 --> 0:51:18.560
<v Speaker 2>take care of the the some of the environmental conditions.

0:51:18.920 --> 0:51:21.960
<v Speaker 2>It's it's not like if we were like a Japanese

0:51:22.600 --> 0:51:26.480
<v Speaker 2>Kappa yo kai with the little pool of water in

0:51:26.560 --> 0:51:28.680
<v Speaker 2>the top of its skull, like if it goes into space,

0:51:28.719 --> 0:51:30.640
<v Speaker 2>the water is going to float away and it's vital

0:51:30.760 --> 0:51:34.000
<v Speaker 2>escence is gone. Like like all of our systems they

0:51:34.040 --> 0:51:37.640
<v Speaker 2>still work. It's not like they won't work without gravity.

0:51:37.719 --> 0:51:40.359
<v Speaker 2>And like that in and of itself is kind of interesting, right,

0:51:40.400 --> 0:51:43.239
<v Speaker 2>It's like because again we we evolved in this, in

0:51:43.560 --> 0:51:49.320
<v Speaker 2>this gravitationally bound existence, and you know, our systems function

0:51:49.440 --> 0:51:53.520
<v Speaker 2>in ways that that depend on or play upon those conditions.

0:51:53.960 --> 0:51:56.480
<v Speaker 3>Yeah. And then of course the other interesting thing is

0:51:56.560 --> 0:52:00.520
<v Speaker 3>talking about the different way is that these probably can

0:52:00.600 --> 0:52:04.360
<v Speaker 3>be overcome. Like one of them, as I mentioned earlier,

0:52:04.440 --> 0:52:08.520
<v Speaker 3>is that astronauts have found that sometimes with intentional cognitive

0:52:08.600 --> 0:52:13.480
<v Speaker 3>force they can undo a visual reorientation illusion, like they

0:52:13.520 --> 0:52:17.359
<v Speaker 3>can flip the floor and ceiling back despite concentrating on it,

0:52:17.400 --> 0:52:20.560
<v Speaker 3>not always but sometimes. And then the other thing is

0:52:20.600 --> 0:52:23.960
<v Speaker 3>so that's like the short term ability to overcome this weirdness,

0:52:24.239 --> 0:52:26.279
<v Speaker 3>and then in the long term you also have just

0:52:26.360 --> 0:52:29.080
<v Speaker 3>the adaptability and plasticity of the brain. It was what

0:52:29.440 --> 0:52:32.040
<v Speaker 3>on and Chancellor was talking about that at first it

0:52:32.360 --> 0:52:35.440
<v Speaker 3>can be pretty bad, but over time your brain does adapt.

0:52:35.520 --> 0:52:39.960
<v Speaker 3>The brain sort of reprograms itself to feel more comfortable

0:52:40.000 --> 0:52:44.160
<v Speaker 3>and natural in this environment. And eventually, I don't I

0:52:44.160 --> 0:52:47.200
<v Speaker 3>actually don't know the answer to whether these types of

0:52:47.239 --> 0:52:51.760
<v Speaker 3>illusions and problems ever completely stop, but there certainly become

0:52:52.040 --> 0:52:55.239
<v Speaker 3>less problematic and persistent over time, and maybe at some

0:52:55.280 --> 0:52:56.839
<v Speaker 3>point stop completely. I don't know.

0:52:57.440 --> 0:53:01.160
<v Speaker 2>Yeah, our brains just have this amazing ability, this neuroplastic

0:53:01.320 --> 0:53:06.120
<v Speaker 2>ability to take whatever is available and make the best

0:53:06.120 --> 0:53:09.640
<v Speaker 2>out of it, to stitch together an understanding of body

0:53:09.680 --> 0:53:14.760
<v Speaker 2>and time and space and place out of whatever is available.

0:53:14.800 --> 0:53:17.640
<v Speaker 2>You know, mcguiver's in existence for you, or it's like

0:53:17.680 --> 0:53:20.359
<v Speaker 2>one of those shows where it's like, okay, chef, these

0:53:20.400 --> 0:53:22.440
<v Speaker 2>are the ingredients you have to cook dinner with and

0:53:22.480 --> 0:53:24.560
<v Speaker 2>the brain's like, Okay, yeah, I can work with that.

0:53:24.600 --> 0:53:26.680
<v Speaker 2>It would be great if I had garlic. I don't

0:53:26.719 --> 0:53:29.200
<v Speaker 2>have garlic, I'll find a way you can live without it.

0:53:29.520 --> 0:53:31.240
<v Speaker 3>That's one of the worst things to be without.

0:53:33.800 --> 0:53:36.000
<v Speaker 2>Yeah, hopefully you have you know, some shallots around or

0:53:36.040 --> 0:53:39.319
<v Speaker 2>some green onions. But yeah, but if the recipe calls

0:53:39.320 --> 0:53:42.600
<v Speaker 2>for garlic, what are you gonna do? Maybe garlic is

0:53:42.640 --> 0:53:46.040
<v Speaker 2>like gravity in that respect, I don't know. All Right, Well,

0:53:46.080 --> 0:53:47.880
<v Speaker 2>we're gonna go ahead and close out this episode of

0:53:47.880 --> 0:53:49.359
<v Speaker 2>Stuff to Blow Your Mind, but we have a lot

0:53:49.360 --> 0:53:51.360
<v Speaker 2>more to discuss about the upside Down. We're going to

0:53:51.400 --> 0:53:55.040
<v Speaker 2>get into some more areas of this that are tied

0:53:55.120 --> 0:53:57.200
<v Speaker 2>in their own way to gravitation. We're going to get

0:53:57.239 --> 0:53:59.839
<v Speaker 2>into optics a bit more, and who knows what else

0:54:00.480 --> 0:54:03.960
<v Speaker 2>we will summon out of the upside down. So we

0:54:04.000 --> 0:54:06.680
<v Speaker 2>hope that you'll join us for that one. In the meantime,

0:54:06.760 --> 0:54:08.839
<v Speaker 2>we'll just remind everyone out there. The Stuff to Blow

0:54:08.880 --> 0:54:11.080
<v Speaker 2>Your Mind is primarily a science and culture podcast, with

0:54:11.120 --> 0:54:14.160
<v Speaker 2>core episodes on Tuesdays and Thursdays and on Fridays. We

0:54:14.200 --> 0:54:16.160
<v Speaker 2>set aside most serious concerns and just talk about a

0:54:16.160 --> 0:54:18.960
<v Speaker 2>weird film on Weird house cinema, So you know that

0:54:19.520 --> 0:54:21.560
<v Speaker 2>helps you make sense of whatever you happen to see

0:54:21.600 --> 0:54:24.000
<v Speaker 2>in the stuff to blow your mind. Feed be it

0:54:24.120 --> 0:54:27.040
<v Speaker 2>the audio feed wherever you get your audio podcasts, and

0:54:27.080 --> 0:54:30.160
<v Speaker 2>we have archives going about years there, or if you're

0:54:30.160 --> 0:54:34.000
<v Speaker 2>catching us on Netflix in an audio video format, which

0:54:34.040 --> 0:54:37.359
<v Speaker 2>is relatively new for us, wherever you happen to get

0:54:37.400 --> 0:54:40.360
<v Speaker 2>the show wherever you're listening and or viewing right now,

0:54:40.640 --> 0:54:43.360
<v Speaker 2>we just asked that, hey, pull whatever triggers are available

0:54:43.360 --> 0:54:48.320
<v Speaker 2>to you in terms of subscribing or liking, adding stars

0:54:48.480 --> 0:54:52.680
<v Speaker 2>or thumbs, just make sure that you know which way

0:54:52.719 --> 0:54:55.759
<v Speaker 2>is the thumbs need to go up. Yeah, so if

0:54:55.760 --> 0:54:59.560
<v Speaker 2>your sense of up and down is momentarily distressed by microgravity,

0:55:00.080 --> 0:55:01.919
<v Speaker 2>let a level out a bit before you rate the show.

0:55:02.400 --> 0:55:05.240
<v Speaker 3>You just mentioned that we were venturing into the audio

0:55:05.360 --> 0:55:08.000
<v Speaker 3>visual format. You know, so we've done audio for so long.

0:55:08.080 --> 0:55:10.000
<v Speaker 3>Now we've got audio visual as well. I think the

0:55:10.040 --> 0:55:15.320
<v Speaker 3>next step has got to be our podcast a silent film.

0:55:15.360 --> 0:55:18.840
<v Speaker 2>Okay, sure, yeah.

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<v Speaker 3>Huge, Thanks as always to our excellent audio producer JJ Posway.

0:55:22.640 --> 0:55:24.799
<v Speaker 3>If you would like to get in touch with us

0:55:24.800 --> 0:55:27.520
<v Speaker 3>with feedback on this episode or any other to suggest

0:55:27.600 --> 0:55:29.560
<v Speaker 3>a topic for the future, or just to say hello.

0:55:29.680 --> 0:55:32.120
<v Speaker 3>You can email us at contact at stuff to Blow

0:55:32.120 --> 0:55:40.240
<v Speaker 3>your Mind dot com.

0:55:40.600 --> 0:55:43.520
<v Speaker 1>Stuff to Blow Your Mind is production of iHeartRadio. For

0:55:43.600 --> 0:55:46.399
<v Speaker 1>more podcasts from my heart Radio, visit the iHeartRadio app,

0:55:46.560 --> 0:55:58.600
<v Speaker 1>Apple Podcasts, or wherever you listen to your favorite shows.

0:56:00.120 --> 0:56:02.360
<v Speaker 2>Wrist watt ter