A head-scratching optical illusion challenges the perception of color and how the brain plays tricks on us. In an image created by the UK contact lens vendor Lenstore, a series of lilac letters ...

Dive into a whimsical world of illusion where cartoon frogs happily juggle vibrant umbrellas! Your mission? Spot the two ...

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 ...

So I've read in more than a few places that color doesn't exist outside our heads, it's just wavelengths of light. That our brains are the things that make color, same with sound (which is just ...

Optical illusions play tricks on your brain and can make you see things that aren't really there, from static images swirling around the page to images that stay with you even after you look away.