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Half-asleep birds choose which half dozes
Birds that sleep with one eye open, and with one hemisphere of the brain asleep, control which side of the brain stays awake.
References:
Rattenborg, N.C., S.L. Lima, and C.J. Amlaner. 1999. Half-awake to the risk of predation. Nature 397(Feb. 4):397.
Further Readings:
1996. Wake up, sleepy brain. Science News 150(Sept. 21):184.
Bower, B. 1998. To dream, perchance to scan. Science News 153(Jan. 17):44.
Travis, J. 1997. What do platypuses dream of? Science News 152(Nov. 8):298.
______. 1997. Napless cats awaken interest in adenosine. Science News 151(May 24):316.
Sources:
Nigel Ball
Virginia Mason Medical Center
Sleep Disorders Center
1100 Ninth Avenue
Seattle, WA 98101
Niels C. Rattenborg
Indiana State University
Department of Life Sciences
Terre Haute, IN 47809
Jerome M. Siegel
University of California, Los Angeles
Sepulveda VA Medical Center
Neurobiology Research, 151A3
North Hills, CA 91343
From Science News, Vol. 155, No. 6, February 6, 1999, p. 86. Copyright © 1999, Science Service.
