Spontaneous arousals from sleep in human subjects
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TLDR
The results lend support to the theory that REM sleep serves a vigilance function and call into question purely physiological criteria of arousal from sleep.Abstract:
Signaled arousals (SA) and unsignaled arousals (UA) from sleep were studied in nine Ss over 5 nights. The SA rate was highest in rapid eye movement (REM) sleep and lowest in Sleep Stage 4; SAs typically terminated REM periods. This pattern was not observed for unsignaled arousals. These results lend support to the theory (Snyder, 1966) that REM sleep serves a vigilance function. The results also call into question purely physiological criteria of arousal from sleep.read more
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On the function of sleep.
TL;DR: It is proposed that sleep serves the function of maintaining immobility in animals at times whenimmobility is an optimum behavioural survival strategem and the survival advantages conferred by the power of sleep to schedule behaviour effectively may justify its existence and persistence in the evolution of species.
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A brain-warming function for REM sleep.
TL;DR: The author hypothesizes that homeotherms use REM sleep to produce heat in order to maintain a high, stable temperature in a restricted CNS core during sleep and that REM sleep is a regulated mechanism for warming the CNS.
Journal ArticleDOI
Awakening from sleep.
Torbjörn Åkerstedt,Michel Billiard,Michael H. Bonnet,Gianluca Ficca,Lucile Garma,Maurizio Mariotti,Piero Salzarulo,Hartmut Schulz +7 more
TL;DR: Clinical contributions will examine two main sleep disorders: insomnia and hypersomnia and the experimental data which provide in the human suggestions on the regulation of awakening are discussed, mainly those concerning sleep architecture and homeostatic/circadian factors.
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Extended sleep in humans in 14 hour nights (LD 10:14): relationship between REM density and spontaneous awakening
TL;DR: The higher REM density preceding wakefulness and the increased number of REM periods terminating in spontaneous awakenings could reflect an enhanced level of a brain arousing process, resulting from reduced sleep pressure in the extended nights.
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Awakening latency from sleep for meaningful and non-meaningful stimuli.
TL;DR: The results suggest that perceptual thresholds are low in both sleep stages 2 and REM but that the ability or willingness to organize a response is greater in REM sleep.
References
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Journal ArticleDOI
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