Schulz-Hildebrandt, a biomedical optics engineer at Harvard Medical School, ran with his observation and developed an ...

How many purple dots do you see in the image above? Are they all the same hue? This new optical illusion, developed by ...

The regular Short Wave science roundup covers mysterious red dots in space, the neurons behind optical illusions and a study of octopus arms. It's time now for our science news roundup from Short Wave ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Credit: Getty Images ...

Add Yahoo as a preferred source to see more of our stories on Google. When you buy through links on our articles, Future and its syndication partners may earn a commission. Illusions like these mess ...

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.