Our eyes can be surprisingly unreliable when it comes to the world of optical illusions. These clever puzzles are designed to ...

A challenging puzzle will put your perception to the ultimate test with a tricky winter optical illusion. Puzzles are a ...

Hidden number and letter optical illusions are some of the most satisfying puzzles because they look unbelievably simple ...

Visual illusions play tricks with the human brain and test your attentiveness. In today’s visual illusion IQ test, the ...

Optical illusions have gained a lot of popularity recently, as they get our brain to exercise, and can be the perfect test of ...

Test your hawk-eye vision by spotting the hidden raccoon among cats in 13 seconds with this visual illusion challenge.

Optical illusions have gained a lot of popularity recently, as they get our brain to exercise, and can be the perfect test of ...

Optical illusions and puzzles share overlapping vibes. Mental trickery, ‘aha’ moments, cross-eyed frustration. Did you know that the Neural Correlate Society holds an annual contest for the Best ...

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 ...

How optical illusions work has been long-debated among scientists and philosophers, who wonder whether these illusions stem from neural processing in the eye or involve higher-level cognitive ...