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The Bizarre Phenomenon of Sleep [Video]


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Sleep is such a large feature of our lives that it’s easy to forget how utterly weird it is. Every night, if we’re lucky, our brain cells switch into a synchronized pattern, putting our lives and minds on hold for hours. Sleep scientists have yet to fully explain why we spend a third of our lives in this state, let alone why we use some of that time wandering through vivid, nonsensical and sometimes upsetting hallucinations.

A recent study in Science suggests that sleep may serve to wash the brain of harmful waste products that build up during the day. Medical researchers observed an increased flow of cerebrospinal fluid in mice that were sleeping or anesthetized. This fluid carries away waste proteins, including one linked to Alzheimer’s disease. The findings join other theories on the function of sleep, some of which I discuss above, in our latest Instant Egghead video.

More to explore:

A Night’s Sleep Cleans Brain of Harmful Toxins (LiveScience)

Sleep Is The Brain’s Way of Staying in Balance [Video] (Scientific American)

Is Sleep Essential? (PLoS Biology)

Sleep 2009 Interview with Jerome Siegel (The Science Network)

Why Does My Brain Sleep? – Matthew P. Walker (GoogleTechTalks)

Credits:
Written & presented by Joss Fong
Edited by Joss Fong
Produced by Eric R. Olson

About the Author: Joss is the video production intern at Scientific American and a graduate student in the Science, Health and Environmental Reporting program at New York University. Follow on twitter at @jossfong

The views expressed are those of the author and are not necessarily those of Scientific American.





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  1. 1. Mendrys 11:36 pm 11/5/2013

    Sciam,

    Why do all of the links in the article bring up the “Macmillan Remote Access Portal” landing site? All of the links go to this URL: https://rap.macmillan.com/dana-na/auth/url_default/welcome.cgi

    Link to this

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