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Half-Awake Seals Help Explain Human Sleep Disorders, University of California, Los Angeles (UCLA) and University of Toronto Study  
2/25/2013 7:41:18 AM

The sleep habits of seals are helping researchers learn more about what happens in the human brain when people have trouble staying asleep. "Seals do something biologically amazing -- they sleep with half their brain at a time," said Professor John Peever of the University of Toronto. "The left side of their brain can sleep while the right side stays awake.
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