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 ...

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 ...

Like any magic trick, this optical illusion requires careful planning and a particular perspective. A hand places a metal ball at the bottom of a 3D printed slide and the ball immediately rolls uphill ...

Finding hidden objects in optical illusion images can offer a good mental workout. These visual illusions are not just fun games. These visual riddles can help to reveal if your brain is sharper and ...

A study of mice starts to unravel how the brain gets tricked by this kind of optical illusion, and it gives clues about how visual perception works. When you purchase through links on our site, we may ...