Using 3D time-lapse imaging, scientists looked at the effects of sleep on a micro-scale and observed how it affected single neurons. During sleep, the neurons perform maintenance work on the nucleus, relieving the stress accumulated during the day and fixing any DNA damage they may have sustained.

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Using 3D time-lapse imaging, scientists looked at the effects of sleep on a micro-scale and observed how it affected single neurons. During sleep, the neurons perform maintenance work on the nucleus, relieving the stress accumulated during the day and fixing any DNA damage they may have sustained.