![]() This creates a rippling effect called the moiré effect. Think of it as a ghost image overlapping a new image. One theory is this movement causes you to “see” the after-image stored in your retina along with the new image. The rapid movement of your eyes is involuntary, so you can’t really blame them. While you’re looking at the pattern, the small, rapid movements of your eyes are at fault for making this optical illusion work. The reality is that this is a static image that isn’t moving at all. Want to see an example in action? Take a look at the image above. If the clues are optical illusions designed to induce things like lateral inhibition ( Hermann grid illusion), pareidolia (seeing faces in inanimate objects) or Troxler's effect (things in peripheral vision to fade), then your brain ends up fooled and confused. Things like colors, shadows and perspectives help the brain understand what it’s seeing, so your brain starts to form an opinion based on these clues. Optical illusions work because your brain needs a little rest, so it devised a few shortcuts along the way. And when you dig deeper into the realm of optical illusions and brain games, you’ll discover why your eyes are such brilliant organs. The notion that your eyes can trick you into seeing something that’s not really there is mind-blowing. For centuries, people around the world have been fascinated with optical illusions.
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