Sleeping On The Right Side Of The Brain

A STUDY PUBLISHED IN THIS WEEK'S ISSUE OF NATURE gives new meaning to the phrase "sleeping on the job." Sleep researchers at Indiana State University say most birds have evolved the ability to sleep with one eye open and one half of their brains awake, a phenomenon called unihemispheric sleep. According to Niels C. Rattenborg, the study's lead researcher, this means the birds can get much needed rest while simultaneously watching out for lurking dangers.

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