The study of visual illusions in animals provides a compelling window into both the evolutionary continuity and diversity of perceptual processes. Research indicates that many species, from domestic ...

From the Rorschach inkblots to the famous 'duck–rabbit', scientists use an arsenal of so–called ambiguous images to help probe the human mind. Now, researchers have revealed four new pictures which ...

How good is your mental speed at observing hidden details? Solve this optical illusion to find out! Only if you are visually ...

An optical illusion is a type of visual phenomenon in which the illusion puzzles the eye and brain into perceiving something different from reality. These puzzles are simply designed to confuse and ...

The famous Ebbinghaus illusion, named for its discoverer, the German psychologist Hermann Ebbinghaus (1850–1909). Despite appearances, the two orange circles are the same size. Have you ever looked at ...