Is sleep essential?

PLoS Biol. 2008 Aug 26;6(8):e216. doi: 10.1371/journal.pbio.0060216.


No current hypothesis can explain why animals need to sleep. Yet, sleep is universal, tightly regulated, and cannot be deprived without deleterious consequences. This suggests that searching for a core function of sleep, particularly at the cellular level, is still a worthwhile exercise.

Publication types

  • Research Support, N.I.H., Extramural

MeSH terms

  • Animals
  • Behavior, Animal / physiology*
  • Sleep / physiology*
  • Species Specificity