evolutionary theory of sleep
- Created by: kandy sisya
- Created on: 07-01-13 18:59
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- Evolutionary Theory
- Foraging: herbivores spend less time sleeping; carnivores more, because food is rich in nutrients
- Energy Conservation: sleep provides a period of inactivity to conserve energy, essential for animals with high metabolic rates
- Predator avoidance: sleep constrained by predation risk. Predators sleep more, prey less
- Waste of time: sleep may be a way of staying still at times when an animal cannot forage and would be subject to predation
- Zepelin and Rechtschaffen suggest that species with a higher metabolic rate sleep more
- IDA: sloths sleep for about 18 hours every day, and have a low metabolic rate
- Evidence suggests that species with higher predation risk sleep less
- A lot of research is on animals, so validity is questioned
- Post-hoc findings (cannot be falsified)
- Meddis
- Webb
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