Add Yahoo as a preferred source to see more of our stories on Google. The latest optical illusion to go viral involves counting black dots across a grid of diagonal lines. And yes, this one really ...

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 ...

Even in an age of increasingly lavish, CGI-enhanced blockbuster films and video games, it takes surprisingly little to entertain people in 2016. All one really needs are some gray lines—horizontal, ...

Your brain is lying to you right now. Not maliciously, and not because something’s wrong with it. It’s doing exactly what evolution designed it to do, making split-second decisions about the world ...