Featuring a blurry image of abstract yellows, oranges, purples and blues, this optical illusion appears pretty plain. It's ...

Look closely at this picture. At first glance, you can see a big tortoise in the centre of the image. But look closer, and ...

Do you think you have sharp eyes? Try this optical illusion IQ test and spot the hidden needle without getting distracted by ...

An Optical Illusion is a type of visual illusion where our brain perceives an image that is different from its actual ...

During the winter months, Museum of Illusions Salt Lake City introduced new elements to their exhibits for the holidays.

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 ...

Susana Martinez-Conde is director of the Laboratory of Visual Neuroscience at the Barrow Neurological Institute in Phoenix, Arizona. She studies visual illusions to gain a better understanding of how ...

In this Ebbinghaus illusion of relative size perception, the orange circle on the left looks bigger than the one on the right - but it is actually 10 per cent smaller. In a new study, medical imaging ...

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 ...

Medical imaging experts are adept at solving common optical illusions, according to new research. The research is the first to show that people can be trained to do better at solving visual illusions, ...