News2013 Runners-Up

To Sleep, Perchance to Clean

Science  20 Dec 2013:
Vol. 342, Issue 6165, pp. 1440-1441
DOI: 10.1126/science.342.6165.1440-a

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Summary

In work that Science's editors named a runner-up for Breakthrough of the Year, researchers studying mice have found experimental evidence that sleep helps to restore and repair the brain. Observations showed that when mice sleep, channels between neurons in their brains expand, allowing cerebrospinal fluid to flush out detritus, such as proteins that in human beings are associated with Alzheimer's disease.