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A Phylogenetic Analysis of Sleep Architecture in Mammals: The Integration of Anatomy, Physiology, and Ecology
TLDR
It is found that species with higher relative BMRs engage in less SWS, whereas species with larger relative brain masses engage in more REM sleep, and REM sleep was the only sleep variable strongly influenced by predation risk.
A Synthesis of Sleep in Wild Birds
TLDR
This synthesis tries to survey and reanalyse the current literature concerning bird sleep and suggests a model based on eyelid blinking which allows for a degree of vigilance during sleep but which is also compatible with minimizing energy expenditure.
Facultative control of avian unihemispheric sleep under the risk of predation
Half-awake to the risk of predation
TLDR
It is found that birds can detect approaching predators during unihemispheric slow-wave sleep, and that they can increase their use of uni Hemispheric sleep as the risk of predation increases.
Unilateral Eye Closure and Interhemispheric EEG Asymmetry during Sleep in the Pigeon (Columba livia)
TLDR
Using digital period amplitude analysis, an objective method for quantifying EEG power (a measure of wave amplitude) across different frequencies, it is demonstrated that pigeons do, in fact, display an association between unilateral eye closure and IA.
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