diurnal rhythm
Having a 24 hour periodic cycle; see circadian.

Online Dictionary of Invertebrate Zoology. . 2005.

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  • rhythm — 1. Measured time or motion; the regular alternation of two or more different or opposite states. 2. SYN: r. method. 3. Regular or irregular occurrence of an electrical event in the electrocardiogram or electroencephalogram. SEE ALSO: wave. 4.… …   Medical dictionary

  • Diurnal — Occurring in the daytime. A patient may have a diurnal fever rather than a nocturnal one. Diurnal also can refer to recurring every day. Pronounced die URN ul, it comes from the Latin dies for day, the root of many words including circadian… …   Medical dictionary

  • Diurnal cycle — A diurnal cycle is any pattern that recurs every 24 hours as a result of one full rotation of the Earth.[1] In climatology, the diurnal cycle is one of the most basic forms of climate patterns. The most familiar such pattern is the diurnal… …   Wikipedia

  • rhythm — n. [Gr. rhythmos, measured motion] Regular periodic changes; see circadian, diurnal …   Dictionary of invertebrate zoology

  • diurnal — Occurring during the day or repeating on a daily basis. Use of circadian rhythm for the latter avoids ambiguity …   Dictionary of molecular biology

  • 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

  • biological rhythm — Physiol. biorhythm. * * * Periodic biological fluctuation in an organism corresponding to and in response to periodic environmental change, such as day and night or high and low tide. The internal mechanism that maintains this rhythm even without …   Universalium

  • Circasemidian rhythm — Numerous studies have demonstrated that human circadian rhythms in many measures of performance and physiological activity actually have a 2 peak daily (circasemidian) pattern.[1][2][3] The name, circasemidian, is based upon the Latin words circa …   Wikipedia

  • Franz Halberg — Dieser Artikel wurde aufgrund von formalen und/oder inhaltlichen Mängeln in der Qualitätssicherung Biologie zur Verbesserung eingetragen. Dies geschieht, um die Qualität der Biologie Artikel auf ein akzeptables Niveau zu bringen. Bitte hilf mit,… …   Deutsch Wikipedia

  • Cortisol awakening response — Production of the corticosteroid hormone cortisol is increased after a person awakes in the morning The cortisol awakening response (CAR) is an increase of about 50% in cortisol levels occurring 20–30 minutes after awakening in the morning… …   Wikipedia

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