Optical illusions like this one to find a hidden number exploit your visual processing system and brain's ability to make assumptions in the absence of complete information. But if you possess sharp ...

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 ...

This optical illusion shows a noisy, grainy pattern that looks like pure visual chaos at first glance. Hidden in this picture ...

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

This image contains a horse which you need to spot within 15 seconds of viewing time. The problem presents itself as a ...

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 ...

Visual perception of motion and its accompanying illusions has long fascinated neuroscientists and psychologists alike. This research field examines how the brain compensates for inherent neural ...

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

Most people use the terms “optical illusion” and “visual illusion” interchangeably, much like “fluid” and “liquid” or “sofa” and “couch” are synonyms. At first glance, this might be seemingly pedantic ...

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, ...

Guppies can be fooled by optical illusions into believing objects are smaller or larger than they really are. This suggests they might not always make the best choices in their natural environment.