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How light gives scientists precise control over neurons
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How light gives scientists precise control over neurons

I love how this story begins with a tiny alga and leads all the way to a powerful new way of studying the brain. Researchers discovered light-sensitive proteins in the alga that open ion channels, and showed these proteins could make even mammalian cells respond to light. That breakthrough helped create optogenetics, which lets scientists switch individual neurons on or off with remarkable precision. Now, the 2026 Nobel Prize in Medicine celebrates how microbiology and neuroscience came together to open exciting new possibilities for understanding the brain and neurological disorders.
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