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The Nobel that lit up the brain: What optogenetics is all about?

The 2026 Nobel Prize in Physiology or Medicine was awarded for work on optogenetics, bringing attention to a remarkable story: a tiny green alga, a light-sensing protein called channelrhodopsin, and three scientists—Karl Deisseroth, Peter Hegemann and Georg Nagel—who turned it into a “light switch” for neurons (nerve cells). But what happened after this switch was built? In the two decades since…

New Indian Express 12/10/2026, 6:49:10 pm IST

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