An optical illusion is a visual phenomenon in which our perception of an image differs from objective reality. This image is ...

Six years ago, when filmmaker Masaya Ishikawa was using Adobe Illustrator to craft digital materials for a video production, he started seeing strange shapes on his screen that shouldn't have been ...

Get ready to have your brain twisted by some mind-bending optical illusions! One of the wildest is the Thatcher Effect, or Thatcher Illusion—it’s when an upside-down face looks normal, but flip it ...

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 ...

Perception researchers have discovered many illusions where context affects perceived size and distance. A great example of this is the Ponzo illusion (reviewed in an earlier blog post). The Ponzo ...