Document Detail

The 24-hour sleep propensity function: experimental bases for somnotypology.
MedLine Citation:
PMID:  1410186     Owner:  NLM     Status:  MEDLINE    
The present study investigated the temporal structure of sleep propensity during 48 hours using an ultrashort 7-min sleep/13-min wake cycle. Eight subjects were tested under two experimental conditions of either attempting sleep, or resisting sleep after a monitored night in the laboratory. Electrophysiological recordings were carried out during the 7-min trials. The temporal structure and the overall level of sleepiness of the 48-hour sleep propensity functions calculated from the amount of total sleep in each trial revealed a high within-subjects stability. This was found both across the two days of the study within conditions, and across conditions. Also, diurnal levels of sleepiness were systematically related to nocturnal sleep parameters. Subjects having short nocturnal sleep latencies and higher sleep efficiencies slept more during the day. It is proposed that the structure and level of the sleep propensity function can be used to characterize individuals along two dimensions of somnotypology: "morningness-eveningness" and "sleepy-alert."
P Lavie; A Zvuluni
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Psychophysiology     Volume:  29     ISSN:  0048-5772     ISO Abbreviation:  Psychophysiology     Publication Date:  1992 Sep 
Date Detail:
Created Date:  1992-11-20     Completed Date:  1992-11-20     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0142657     Medline TA:  Psychophysiology     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  566-75     Citation Subset:  IM    
Sleep Lab, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa.
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MeSH Terms
Arousal / physiology*
Circadian Rhythm / physiology*
Polysomnography / methods*
Reaction Time / physiology
Sleep Stages / physiology*
Sleep, REM / physiology

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