953376
Evolutionary explanations of sleep
- Energy conservation
- sleep provides a period of inactivity to conserve energy
- essential for animals with high metabolic rate
- sleep provides a period of inactivity to conserve energy
- Foraging
- herbivores spend less time sleeping
- carnivores more because
food rich in nutrients
- herbivores spend less time sleeping
- Predator avoidance
- sleep constrained by predation risk
- predators sleep more prey less
- sleep constrained by predation risk
- Waste of time
- sleep may be a way of staying still at times when an animal
cannot forage and would be subject to predation
- sleep may be a way of staying still at times when an animal
cannot forage and would be subject to predation
- Evaluation
- evidence about animal sleep patterns
incomplete - Phylogeny of sleep project
- evidence suggests that species with a higher metabolic
rate sleep more - Zepelin and Rechtschaffen (1974)
- evidence suggests that species with higher
predation risk sleep less - Alison and Cicchetti
(1976)
- evidence from Capellini et al )2008) - supports
foraging and predator avoidance
- NREM evolved first for energy conservation then
REM to maintain brain activity
- phylogenetic signal supports evolution
of sleep patterns
- evidence about animal sleep patterns
incomplete - Phylogeny of sleep project
- IDA
- evolutionary approach can be combined with restoration
using core and optional sleep - Horne (1988)
- evolutionary approach can be combined with restoration
using core and optional sleep - Horne (1988)
Want to create your own Mind Maps for free with GoConqr? Learn more.