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Circadian and Sleep-Dependent Processes in Sleep Regulation

  • A. A. Borbély
Part of the Proceedings in Life Sciences book series (LIFE SCIENCES)

Abstract

When man or animals live in an environment without time-cues, their sleep-wake cycle continues to exhibit a well-defined rhythm whose period (τ) is usually somewhat different from 24 h (e.g. rat: Borbély and Neuhaus 1978, man: Wever 1979). The sleep-wake cycle consitutes therefore a true circadian rhythm which is controlled by an oscillator. Research in circadian rest-activity rhythms is based heavily on motor activity recordings, whereas long-term measurements of sleep have been rarely undertaken. Waking is a prerequisite for motor activity, although motor activity is not always present during waking. Particularly when wheel-running is used as the activity measure, inactivity cannot be equalled to rest or sleep. Long-term recordings of movement activity with a transducer under the animal’s cage provide a close approximation of the sleep-wake rhythm (Borbély and Neuhaus 1978).

Keywords

Circadian Rhythm Sleep Deprivation Sleep Period Slow Wave Activity Sleep Phase 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin · Heidelberg 1982

Authors and Affiliations

  • A. A. Borbély
    • 1
  1. 1.Institute of PharmacologyUniversity of ZürichZürichSwitzerland

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