Sleep as a biological rhythm: a historical review.
In the early 1960s sleep was generally viewed as a homeostatic system and its circadian rhythm characteristics were unexplored. During this period the maturing field of chronobiology had paid scant attention to sleep as a biological system. In the late 1960s and early 1970s, the concepts and procedures of chronobiology were rapidly incorporated into sleep research. By the 1980s, the conception of sleep as a circadian rhythm had been accomplished. This major and rapid paradigm shift can be attributed largely to the accessibility of the developed area of chronobiology.
Department of Psychology, University of Florida, Gainesville 32611.
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Webb
D001683:Biological Clocks / Q000502:physiology*; D049673:History, 20th Century; D006801:Humans; D012106:Research / Q000266:history; D012890:Sleep / Q000502:physiology*