See this year's winning optical illusions and learn how they make the brain perceive things that are not reality.

Add Yahoo as a preferred source to see more of our stories on Google. Get ready to put your perception to the test! These incredible visual tricks will have you wondering what's real and what's just ...

Nature can be a trickster with its mixed bag of optical tricks. If you don’t pay attention you can unbeknownst to yourself, wander down all kinds of crazy paths that can render you completely lost. So ...