BRS: Evolutionary Theory

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Predator Avoidance AO1
Can sleep longer/no risk//Pray - sleep constrained - risk of preditation- sleep when not vulnerable (night)
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Predator Avoidance AO2
Trade off - Alson and Cicceti - high risk pred slept less//Capalini - no SDC - neg. C btw met rate and sleep.
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Foraging Requirements AO1
food low in nutrients - more time eating - canivores - sleep longer
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Foraging Requirments AO2
Trade off - capalini found greater need foraging - higher sleep rate/SDC // Unilateral Sleep: dolphins - shows adapt to env.
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Energy Conservation AO1
High expenditure: Warn blooded - energy maintains temp. = espec high met. rate aniamls //Benefit of sleep - forced inactiviy - provides energy. cons.
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Energy Conservation AO2
Predictions - suggests neg. C btw body size+sleep-zepplin - smaller animals w. high met - longer sleep//however capalini found pos-bod size and sleep
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Energy Conservation NREM
brain active in REM - energy only in NREM/NREM evolved for energy//Expectations - prem reptiles only NREM/REM evolved late/neg. C btw bod size and REM sleep.
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Waste of Time AO1
Adaptive strategy e.g brown rat only when prey awake//dangers of being awake - high risk preditation and injury//Time wastin - past time when not easting - less vulnerable at night.
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Waste of Time AO2
Phylogenetic signal - similar patterns suggests evolved through env. pressures//evo app. sleep must be adaptive - all animals do it/diffs suggests adaption to pressures.
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IDAs
Alt. exp - Horne 'core' -sws and 'optional' - REM - occupuys unproductiv ehours//SWS essential body/brain processes.Restorative - argues against - e.g doesn't expl. why infants in REM for much
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Card 2

Front

Trade off - Alson and Cicceti - high risk pred slept less//Capalini - no SDC - neg. C btw met rate and sleep.

Back

Predator Avoidance AO2

Card 3

Front

food low in nutrients - more time eating - canivores - sleep longer

Back

Preview of the back of card 3

Card 4

Front

Trade off - capalini found greater need foraging - higher sleep rate/SDC // Unilateral Sleep: dolphins - shows adapt to env.

Back

Preview of the back of card 4

Card 5

Front

High expenditure: Warn blooded - energy maintains temp. = espec high met. rate aniamls //Benefit of sleep - forced inactiviy - provides energy. cons.

Back

Preview of the back of card 5
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