Synonyms
Sleep-wake rhythms; Wake-sleep cycle
Definition
The rhythmic alternation between two behavioral states: sleep and wakefulness. The rhythmic regulation of the alternation between these two states usually refers to rhythms with a circadian period.
Characteristics
Sleep and the Sleep-Wake Cycle
The defining behavioral characteristics of sleep that are used to identify sleep in many animals are: (i) a species-specific posture; (ii) reduced responsiveness to external stimuli; (iii) rebound after deprivation see [1].
The assessment of a species-specific posture requires around-the-clock behavioral observations. In most species, sleep will be accompanied by behavioral quiescence. In some species, such as dolphins, sleep verified by electrophysiological recordings has been observed while the animal is behaving.
Variation in responsiveness across putative sleep and wake states can be assessed by quantification of arousal thresholds for standardized tactile, auditory, or other stimuli....
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References
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Dijk, DJ. (2009). Sleep-Wake Cycle. In: Binder, M.D., Hirokawa, N., Windhorst, U. (eds) Encyclopedia of Neuroscience. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-29678-2_5454
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DOI: https://doi.org/10.1007/978-3-540-29678-2_5454
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Publisher Name: Springer, Berlin, Heidelberg
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