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biological clock
1. any mechanism that allows expression of specific genes at periodic intervals. 2. any physiological factor that regulates body rhythms. See clock mutants.
biological rhythm
Any periodic, more-or-less regular fluctuation or cycle in a biological system or process that is not wholly under the control of environmental cues but is controlled centrally by a biological clock. ...
chronobiology
The branch of biology concerned with biological rhythms. See biological clock, biological rhythm. See also alpha wave, basic rest-activity cycle, beta wave, circadian rhythm, circannual rhythm, delta ...
circadian rhythm
Any 24-hour periodicity in the behaviour or physiology of animals or plants. Examples are the sleep/activity cycle in many animals and the growth movements of plants. Circadian rhythms are generally ...
circannual rhythm
Any biological rhythm involving a biological or psychological process that occurs or fluctuates at intervals of approximately one year, even in controlled environments from which seasonal cues have ...
entrainment
1 The picking up and setting into motion of particles, either by wind, water, or ice. The main entrainment forces are provided by impact, lift force, and turbulence.2 In meteorology, the ...
infradian rhythm
Any biological rhythm with a period of less than a day. See alpha wave, basic rest-activity cycle, beta wave, delta wave, gamma wave, sensorimotor rhythm, theta wave. See also biological clock, ...
synchronizer
A storage device with a wide range of operating speeds that is used in an intermediate capacity when transferring data between devices that cannot operate at the same rate.
zeitgeber Quick reference
The Oxford Dictionary of Sports Science & Medicine (3 ed.)
A word derived from German: zeit, time; geber, give; a zeitgeber is a synchronizing agent, as in an environmental cue responsible for maintaining biological rhythms. For example, ...
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