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3.28 - Decomposing the Evolution of Sleep: Comparative and Developmental Approaches
Book chapter

3.28 - Decomposing the Evolution of Sleep: Comparative and Developmental Approaches

M.S Blumberg and N.C Rattenborg
Evolution of Nervous Systems, pp.523-545
Elsevier Inc, Second Edition
2017
DOI: 10.1016/B978-0-12-804042-3.00100-7

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Abstract

Sleep is ubiquitous throughout the animal kingdom. Nonetheless, we still do not have a firm grasp on its functions. Whatever its functions, we should expect them to vary in accord with the diverse morphologies, physiologies, ecologies, and life histories of different species and taxonomic groups. Moreover, one apparently universal feature of sleep—documented in flies and worms, rats, and humans—is that it predominates early in development. Accordingly, both developmental and comparative approaches—and combined developmental comparative approaches whenever possible—are likely to prove vital for revealing the origins and functions of sleep.
Energetics Altricial Quiet sleep Slow-wave sleep Brain rhythms Ultradian Birds Mammals Diurnal Evo devo Myoclonic twitches Nocturnal Precocial Active sleep Circadian Invertebrates Rapid eye movements

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