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View full lesson: http://ed.ted.com/lessons/could-your-brain-repair-itself-ralitsa-petrova

Imagine the brain could reboot, updating its damaged cells with new, improved units. That may sound like science fiction — but it’s a potential reality scientists are investigating right now. Ralitsa Petrova details the science behind neurogenesis and explains how we might harness it to reverse diseases like Alzheimer’s and Parkinson’s.

Lesson by Ralitsa Petrova, animation by Artrake Studio.