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Brain Science
Lighting the Way
Scientists at the Janelia Farm Research Campus of the Howard Hughes Medical Institute have added a gene to the neurons in zebrafish brains that causes them to produce light each time they send a signal. Because zebrafish are transparent, the scientists can watch the sparkling activity of most of the 100,000 neurons in the animal’s brain. The patterns of flashes are giving them new insights into how all brains process information.