ONE popular optical illusion has left people baffled and wondering what it means for their brains. The Spinning Dancer, also known as the Silhouette Illusion, is an animated optical illusion. Please ...

This amazing optical illusion has been put forward as a visual personality test that can reveal whether you’re right-brained or left-brained. That’s totally bogus, of course, but it doesn’t make the ...

If you were around for the cracktastic Magic Eye illusion fad of the ’90s, you know we’ve been here before. But thanks to the Internet it’s even easier to (temporarily) scramble your brain than ever.

Optical illusions just keep getting more extreme. We once examined an optical illusion in which a silhouetted figure spins in different directions depending on how you look at it. Here’s the sequel, ...