You've probably seen many optical or visual
illusions, but you just can't believe what you're seeing. There are also tactile
illusions, and you may remember these ones we featured on the show recently. Cross your fingers so they really work like a wire there and you rub that on both sides of your nose so that one finger is on one side and the other is on the other side and if you do that for about half a minute do, maybe a bit longer, you get a most peculiar feeling like if you have two noses it's really quite strong.
You can try after the show. The reason is that you're actually touching that part and that part where you release your fingers, you can usually see that part against that part, the two you're rubbing your nose with your fingers crossed, would just be two separate objects to be touched and after a while your fingers are telling your brain that you have two objects there, two noses, in fact this is a tactile illusion where you are actually fooling your brain as to what you are thinking there is another one you need a friend for dean can i lend you your hands please sure can you put them together like this yeah ok now so over like that thats right yeah clasp your fingers together and spin her inside out This is now, I'll point a finger and see if you can move the right one, the one wrong move, the one and one, uh, third, very mysterious, isn't it, because your eyes tell your brain , what it should move, move d as one you wouldn't go wrong again, your eyes are used to seeing your fingers in a different orientation, but when I touch the finger, oh, that's easy, easy, because now the feeling of one overrides the eyes and just reacting to the feeling itself so you can override a make sense like that here's another one that's very odd look at this can I borrow your forearm mr sure that's your crook of your elbow now , the part where it's actually hinged doesn't touch it, that's pretty important, what I'm doing I have to get my fingers to wander up your forearm while you have your eyes closed, okay, I want you to do it to me say when i'm about to reach your elbow ok no cheating no and let's go trundle it's a weird type of movement weird feeling going left and right up your forearm too but i'm telling uh nen about half way now well tell me when im actually just at the top of your mid to go yes you you are almost there really dont look much more than half way.
In fact, it's very consistent. Most people get well. You could get to a quarter of the forearm, but not much closer. It's a very strange feeling if you don't believe me get a friend and try it yourself