Slow waves of electrical activity through your brain may help rinse away its waste products while you sleep. The process seems to go awry in Alzheimer’s disease
Source:
https://www.newscientist.com/article/2222016-a-type-of-brainwave-may-help-clean-your-brain-while-you-sleep/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home