Number of synapses shown to vary between night and day, zebrafish study finds

With the help of tiny, see-through fish, researchers are homing in on what happens in the brain while you sleep. In a new study, they show how the circadian clock and sleep affect the scope of neuron-to-neuron connections in a particular region of the brain, and they identified a gene that appears to regulate the number of these connections, called synapses.

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