Why can someone else make you laugh by tickling you, but you usually cannot tickle yourself?

In this episode of Why Stuff Happens, we explore the surprising brain science behind tickling. Discover how your brain predicts sensations created by your own movements, why unexpected touch feels more intense, and how the cerebellum helps distinguish between actions you cause and sensations coming from the outside world.

This quick science briefing explains sensory prediction, surprise, laughter, and why your brain is almost always one step ahead of your own fingers.

Listen and discover why being unable to tickle yourself reveals something fascinating about how the brain recognizes your body and controls your responses.