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An optical illusion is a fascinating visual trick that deceives the brain into seeing something different from reality. These illusions occur when the information our eyes send to the brain is ...

Psychologists have long been interested in how people interpret ambiguous, bistable images, such as the examples below. Bistable images. Top left: faces or a vase. Top right: rabbit or duck. Bottom ...

In a new optical illusion, what you see in the picture supposedly reveals something about your gender. But much like other ambiguous images, this illusion plays on the way our brains love to fill in ...

Optical illusions come in all forms, from simple tricks of the eye to complex geometric designs, but my personal favourites ...