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SYFY WIRE Bad Astronomy

Three Illusions That Will Destroy Your Brain

By Phil Plait
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Thanks to my evil twin Richard Wiseman (a UK psychologist who specializes in studying the ways we perceive things around us, and how easily we can be fooled), I saw this masterful illusion video that will keep you guessing on whatâs real and what isnât. Itâs only two minutes long, so give it a gander:

Cool, eh? The reason you got fooled, at least twice, is that we get confused when our three-dimensional world is translated into two dimensions. We perceive distance for nearby objects using binocular vision, which depends on the angles between our eyes and the objects. If you create a picture of an object that is carefully distorted to match those changing angles, you can fool the brain into thinking itâs seeing a real object when in fact itâs a flat representation.

Weâre actually very good at taking subtle cues and turning them into three-dimensional interpretations. However, because of that very sensitivity, itâs easy to throw a monkey in the wrench, messing up our perception.

Still donât believe me? Then watch this, and if it doesnât melt your brain, I can no longer help you.

Our brains are very, very easy to fool. Iâll note that the way we see color is very easy to trick, too. I wrote an article about a fantastic, astonishing color illusion back in 2009, and it spurred a lot of arguments in the comments, even when I showed clearly how it works. Amazing.

And because why not, hereâs the picture (the colors get a bit squished in the middle, so you can see the original here at the bottom of the page if you'd like). Tell me, do you see a blue-armed spiral, and a green one?

<evil chuckle>

Think again.

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