Nature is full of an almost infinite array of colors, but some are more unique than others. Apart from the inanimate sky and water, the color blue only some animals and flowers have the privilege of ...

A grayscale ballerina who appears to be moving. A human who can fit in a doll box. A black-and-white prism which appear to change shape when viewed from three different directions. Those are the top ...

The Best Illusion of the Year contest offers researchers, and participants, an opportunity to explore the gaps and limits of human perception. By Katrina Miller Take a look at this video of a waiting ...

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 ...

Perception researchers have long known about the structural and functional features that differentiate our central vision from our peripheral vision. The central (or foveal) region of our retinas are ...

Most people are convinced they see the world exactly as it is, until a viral illusion quietly proves otherwise. The latest circle-filled puzzle racing around social feeds is a reminder that even ...