While new optical illusions go viral all the time, here are some of the most famous illusions that have kept us scratching our heads for years.

The optical illusion inside butterfly wings is similar to the barber-pole illusion. When looking at the red-and-white striped ...

Israeli artist Dudi Ben Simon masterfully transforms the ordinary into the extraordinary, turning the world into his creative playground. With a keen eye for illusion, he blends everyday objects and ...

Optical illusions often go viral, but they've been around long before social media. Here are 10 historical illusions that ...

Researchers shot butterflies taking off in super slo-mo and found the patterned wings may actually be an optical illusion to make predators miss ...

Illusions like these mess with the brain's visual processing system, making viewers see things that aren't there in reality. | Credit: Eva Almqvist via Getty Images Optical illusions play tricks on ...

The internet is blowing a collective gasket over a triple-tiered eye test in which objects seem to disappear and appear right before the viewer's eyes. Twitter It’s the multiheaded hydra of optical ...

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 ...

The Illusion Divide: When exposed to a motion aftereffect, human observers perceive a stationary object as shifted in the opposite direction. Primate inferior temporal (IT) cortex neurons mirrored ...