Biological rhythms

Circadian rhythms

A type of biological rhythm subject to a 24 hour cycle eg the sleep/wake cycle

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Infradian rhythms

A type of biological rhythm with a frequency of less than one cycle in 24 hours eg menstrual cycle and seasonal affective disorder

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Ultradian rhythms

A type of biological rhythm with a frequency of more than one cycle in 24 hours eg the stages of sleep

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Biological rhythms

Distinct patterns of changes in body activity that conform to cyclical time periods - influenced by endogenous pacemakers and exogenous zeitgebers

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Endogenous pacemakers

Internal body clocks that regulate many biological rhythms eg the suprachiasmatic nucleus

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Exogenous zeitgebers

External cues that affect/entrain our biological rhythms eg light

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Other cards in this set

A type of biological rhythm with a frequency of less than one cycle in 24 hours eg menstrual cycle and seasonal affective disorder

Infradian rhythms

A type of biological rhythm with a frequency of more than one cycle in 24 hours eg the stages of sleep

Distinct patterns of changes in body activity that conform to cyclical time periods - influenced by endogenous pacemakers and exogenous zeitgebers

Internal body clocks that regulate many biological rhythms eg the suprachiasmatic nucleus

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