What is an Optical Illusion? An optical illusion is a visual phenomenon where the brain misinterprets what the eyes see.

Imagine describing the precise dimensions of a common object—like a coin—for another person. Did you move your hand, pretending to pick one up to show its size? If so, you likely weren’t alone. A new ...

This brings optical illusions to new heights. Thought spotting all the animals in this visual menagerie was hard? Puzzlers are frazzling their noodles over this high altitude illusion, which ...

In the fast-paced world of digital distractions, a new kind of viral phenomenon has taken over our social feeds: the high-stakes visual perception challenge. As a long-time observer of how our brains ...