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An incredible resurfaced TV clip shows a bizarre physical illusion, which makes it feel like you've got two noses. Check out how it's done:
The clip, which was recently shared on TikTok, is from an episode of The Curiosity Show, an Australian educational kids' programme that ran from 1972 to 1990 on Nine Network - with clips now also to available to watch via the show's YouTube page.
In the footage, presenter Rob Morrison says: "You've probably seen many optical or visual illusions, where you just can't believe what you see.
"Well there are tactile illusions too."
He proceeds to show us one such trick, which involves crossing two of your fingers over and rubbing your nose.
Morrison says: "You cross your fingers, so they're really do make something like a 'Y' there. And you rub that on either side of your nose, so that one finger is on one side and the other's on the other.
"If you do that for about half a minute - perhaps a little bit longer - you get the most peculiar sensation, as if you've got two noses. It really is quite strong."
He then explains that the reason behind the strange sensation is because your brain is confused about which parts of your fingers are touching something.
"You're actually touching that part and that part," Morrison says, pointing to the parts of the fingers that form the inside of the 'Y' shape.
"If you uncross your fingers you can see that normally that part and that part - the two which are rubbing on your nose with your fingers crossed - would only be touched by two separate objects.
"After a while, that's what your fingers tell your brain: that you've got two objects there - two noses, in fact."
He also shows us another trick, which 'you'll need a friend for', roping in co-presenter Deane Hutton to demonstrate how it's done.
This time, Morrison gets Hutton to cross his hands over and interlock his fingers, before turning them 'inside out'.
Morrison then points to one of Hutton's fingers and asks him to move it, but he finds he's unable to move the right one.
"Your eyes are telling your brain what to move," Morrison explains.
"Your eyes are used to seeing your fingers in a different orientation.
"But if I touch the finger, it's easy, because now feeling overrides eyes."
Hutton finds he's then able to move the right finger easily after it's tapped.
"That's the way you can make one sense override another," Morrison tells him.
The mind-blowing video has racked up more than 300,000 likes on TikTok.
While some people claimed their brain 'wasn't fooled', one person wrote: "I was about to say 'I don't feel 2 noses' and then I did and broke out laughing, so funny."
Another added: "That freaked me out."
A third joked: "Me with acrylic nails rn scratching my eyes out."
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