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 ...

We're captivated by optical illusions of all kinds, whether they're accidental or created intentionally to trick our perception. And if they generate a nerdy debate about colour, all the better. Over ...

Recently, a new optical illusion sent the internet into a tizzy. In this, a group of elephants were arranged in a circle. While on first look, they all looked to be blue-purple in color (or rather ...

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 ...

Have you ever looked at two circles of exactly the same size and sworn one was larger? If so, your eyes have been tricked by the Ebbinghaus illusion, a classic example of how context can shape what we ...

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 ...

Illusions aren't just for fun; they also help reveal how human vision works. Commentator Tania Lombrozo turns to an expert for an explanation of... Vision scientists are obsessed with illusions. This ...

The famous Ebbinghaus illusion, named for its discoverer, the German psychologist Hermann Ebbinghaus (1850–1909). Despite appearances, the two orange circles are the same size. Have you ever looked at ...