circadian rhythms are entrained by a light cycle

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• Circadian rhythm — Circadian redirects here. For the album by the rock band 5th Projekt, see Circadian (album). Some features of the human circadian biological clock A circadian rhythm, popularly referred to as body clock, is an endogenously driven, roughly 24 hour …   Wikipedia

• Melatonin — Not to be confused with Melanin or Melanotan. Melatonin Systematic (IUPAC) name …   Wikipedia

• Delayed sleep phase syndrome — Classification and external resources ICD 10 G47.2 ICD 9 327.31 …   Wikipedia

• Augustin Pyramus de Candolle — A. P. de Candolle …   Wikipedia

• Lighting — Not to be confused with lightning. For other uses, see lighting (disambiguation). Low intensity lighting and haze in a concert hall allows laser effects to be visible …   Wikipedia

• Entrainment (physics) — See entrainment for other types. Entrainment is the process whereby two interacting oscillating systems, which have different periods when they function independently, assume the same period. The two oscillators may fall into synchrony, but other …   Wikipedia

• Free-running sleep — experiments can involve any organism which sleeps. Freerunning sleep is sleep which is not adjusted, entrained, to the 24 hour cycle in nature nor to any artificial cycle. Such experiments are used in the study of circadian and other rhythms in… …   Wikipedia

• Colin Pittendrigh — (October 13, 1918 March 19, 1996)[1] was a US American biologist of English parentage. He is a co founder of modern chronobiology along with Jürgen Aschoff and Erwin Bünning. Contents 1 Life 2 Work …   Wikipedia