Can light switch on memories? What the Nobel Prize science really means for the human brain
It started with a question about pond algae. Peter Hegemann wanted to know how Chlamydomonas , a green alga made of a single cell, steers itself towards light. In the early 2000s, he and Georg Nagel found the answer: Channelrhodopsin, a protein that opens a small gate in the cell when light strikes it. Karl Deisseroth, a psychiatrist and bioengineer at Stanford University, then took the leap. He…
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