Psychology Wiki

Assessment | Biopsychology | Comparative | Cognitive | Developmental | Language | Individual differences | Personality | Philosophy | Social |
Methods | Statistics | Clinical | Educational | Industrial | Professional items | World psychology |

Biological: Behavioural genetics · Evolutionary psychology · Neuroanatomy · Neurochemistry · Neuroendocrinology · Neuroscience · Psychoneuroimmunology · Physiological Psychology · Psychopharmacology (Index, Outline)

Zeitgeber (from German for "time giver") is any external (exogenous) cue that entrains the internal (endogenous) time keeping system of organisms. It is any feature of the external environment that provides clues as to the passage of time, for example the passage of the sun, moon and stars.

The strongest Zeitgeber, for animals, is light. Other, non-photic, zeitgebers include changes in:

See also


Further reading

  • Aschoff J (1965) The phase-angle difference in circadian periodicity.In "Circadian Clocks" (J. Aschoff, ed.). North Holland Press, Amsterdam, p 262–278.

External Links


This page uses Creative Commons Licensed content from Wikipedia (view authors).