Schulz, H. and Dirlich, G. and Balteskonis, S. and Zulley, Jürgen (1980) The REM-NREM sleep cycle: renewal process or periodically driven process? Sleep 2 (3), pp. 319-328.
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The question of the serial dependence of successive REM-NREM sleep cycles was examined. The experiments were performed in two different settings: 309 sleep episodes of 11 healthy young sleepers (age range, 20-36 years) were recorded under entrained conditions in the sleep laboratory; 5 of these subjects also slept in an isolation unit (underground apartment) with free-running sleep-wake cycles for a total of 107 sleep episodes. The covariances between the first three REM-NREM cycles were computed using an intraindividual cross-night approach. Significant negative covariances were observed. This result confirmed the assumption of serial dependencies between successive REM-NREM cycles. These data agree with the features of a periodically driven process and are incompatible with the alternatively hypothesized renewal model. The periodically driven process is similar in concept to the basic rest-activity cycle.
|Institutions:||Medicine > Lehrstuhl für Psychiatrie und Psychotherapie|
|Subjects:||600 Technology > 610 Medical sciences Medicine|
|Created at the University of Regensburg:||Unknown|
|Deposited On:||24 Feb 2011 13:38|
|Last Modified:||21 Jul 2011 04:07|
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