One of the most enjoyable things about optical illusions is the after-effect . . . the moment when you and whoever else you've done it with let out a collective, "ohhhh." If you think this experience ...

Optical Illusion to Test Your IQ: You must have seen many types of optical illusions like physical, physiological, and cognitive illusions. An optical illusion is a mind-bending, deeply fascinating, ...

Optical illusions are older than you think. The first optical illusions date back to 20,000 BC and took the form of cave sculptings. Nowadays they are found all over the place – on screens, in books ...

Most people use the terms “optical illusion” and “visual illusion” interchangeably. “That’s a pet peeve of mine,” says Pascal Wallisch, a neuroscientist and psychology professor at New York University ...

A rather confusing optical illusion is baffling people, yet the answer is simple. A picture of an elephant, facing the left, has stumped people after the optical illusion asks people to work out how ...