TED Talks: Beau Lotto Explains How Optical Illusions Show How We See

PHOTO: Beau Lotto speaks at TEDGlobal 2009.

TED is a nonprofit organization devoted to Ideas Worth Spreading. At the TED conference, the world's leading thinkers and doers are asked to share a brilliant idea -- in 18 minutes. These talks are made available free online at TED.com.

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Beau Lotto's color games puzzle your vision, but they also spotlight what you can't normally see: how your brain works. This fun, first-hand look at your own versatile sense of sight reveals how evolution tints your perception of what's really out there.

TED is a nonprofit organization devoted to Ideas Worth Spreading. Find 1,000+ more video available free at TED.com. Follow TED on Twitter at @TEDNEWS

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