Functions of sleep

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Meddis (1975)
waste of time hypothesis - those with more predators are safer sleeping in a safe place
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Allison
generally, the more predators and animal has the less it sleeps. However there are some exceptions, e.g. rabbits
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Webb
hibernation hypothesis - small animals with a high metabolism use sleep as a way of conserving energy
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Zeplin
bats = 20 hours, elephants = 4 hours
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Cappellini
found a negitive correlation between metabilic rate and sleep using standardised procedures. Also identified the phylogenetic scale
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Cauter
GH correlate with SWS
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Seigel
REM correlates with maturity, e.g. dolphins = 0 hours, platypus' = 8 hours
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Stickglold
REM = procedural memories, SWS = semantic memories
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DJ Tripp and Randy Gardner
the effects of total sleep deprivation (201 and 260 hours)
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Williams
after 72 hours ps experience microsleep which is the same on EEG as normal sleep
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Empson
people who have REM deprivation, increase REM by 50% on their recovery night showing its needed
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Shapiro
marathon runners have 1 hour SWS sleep more after a race (used to enable protein synthesis)
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Card 2

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generally, the more predators and animal has the less it sleeps. However there are some exceptions, e.g. rabbits

Back

Allison

Card 3

Front

hibernation hypothesis - small animals with a high metabolism use sleep as a way of conserving energy

Back

Preview of the back of card 3

Card 4

Front

bats = 20 hours, elephants = 4 hours

Back

Preview of the back of card 4

Card 5

Front

found a negitive correlation between metabilic rate and sleep using standardised procedures. Also identified the phylogenetic scale

Back

Preview of the back of card 5
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