The optical illusion appears to show two grey squares with different shades, but they are actually exactly the same colour.

An 'unsettling' optical illusion shows two squares which appear to be completely different shades of gray, but are actually identical, leaving people baffled. One said: 'My brain is broken'.

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 ...

Five years ago we published an optical illusion that millions of you were completely bamboozled by, and today I've found a brand-new version of that illusion. Of course, I'm referring to the rotating ...

In today’s Optical Illusion, we all have very large, weeping cherry blossom trees, which look very beautiful. But this image ...

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

You look at an image of a black circle on a grid of circular dots. It resembles a hole burned into a piece of white mesh material, although it’s actually a flat, stationary image on a screen or piece ...

Optical illusions are a treat for visually genius minds. These visual illusions are excellent at assessing and examining the workings of the human brain. Researchers around the world incorporate ...