Sleeping under the risk of predation

@article{Lima2005SleepingUT,
  title={Sleeping under the risk of predation},
  author={S. L. Lima and N. Rattenborg and John A Lesku and C. Amlaner},
  journal={Animal Behaviour},
  year={2005},
  volume={70},
  pages={723-736}
}
Every studied animal engages in sleep, and many animals spend much of their lives in this vulnerable behavioural state. We believe that an explicit description of this vulnerability will provide many insights into both the function and architecture (or organization) of sleep. Early studies of sleep recognized this idea, but it has been largely overlooked during the last 20 years. We critically evaluate early models that suggested that the function of sleep is antipredator in nature, and outline… Expand
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