This week we're messing with your head. We've all seen optical illusions, but it turns out there are auditory illusions, as well: sounds that exploit the way we process audio and make us perceive it in unexpected ways. On today's episode, we pick four auditory illusions and try them out on each other.

And by the way, you'll want to listen on headphones, since a lot of these rely on the separation of your left and right ears.

If you're looking for more auditory illusions, check out Diana Deutsch's work on illusions and paradoxes: http://deutsch.ucsd.edu/

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