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Why do we see illusions?

In this video, neuroscientist Mark Changizi explains why optical illusions occur

In this video, neuroscientist Mark Changizi explains why illusions occur, and why the brain can’t properly render simple optical stimuli. Mark Changizi gave this presentation at the TedYouth 2012 conference, and it was recently uploaded at TedEd, which also has a bunch of other cool videos.

For more with Mark Changizi, check out these interviews:

Mark Changizi on how language and music got into our brains

Mark Changizi: Why human eyes see in color

Mike Brennan

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