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basic rest-activity cycle

A biological rhythm of waxing and waning alertness with a period of approximately 90 minutes in humans. During sleep it controls the cycles of REM and slow-wave sleep. Also called the ...

basic rest–activity cycle

basic rest–activity cycle n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

... restactivity cycle n. A biological rhythm of waxing and waning alertness with a period of approximately 90 minutes in humans. During sleep it controls the cycles of REM and slow-wave sleep . Also called the restactivity cycle . BRAC ...

chronobiology

chronobiology n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

... n. The branch of biology concerned with biological rhythms . See biological clock , biological rhythm . See also alpha wave , basic restactivity cycle , beta wave , circadian rhythm , circannual rhythm , delta wave , gamma wave , infradian rhythm , menstrual cycle , sensorimotor rhythm , sleep–wake cycle , suprachiasmatic nucleus , telomere , theta wave , ultradian rhythm , Zeitgeber . [From Greek chronos time + English biology...

biological rhythm

biological rhythm n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...rhythm n. 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 . It may be an ultradian rhythm such as a circannual rhythm or a menstrual cycle ; a circadian rhythm such as the sleep–wake cycle ; or an infradian rhythm such as an alpha wave , basic restactivity cycle , beta wave , delta wave , gamma wave , sensorimotor rhythm , or theta wave . See also chronobiology , pacemaker...

infradian rhythm

infradian rhythm n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...rhythm n . Any biological rhythm with a period of less than a day. See alpha wave , basic restactivity cycle , beta wave , delta wave , gamma wave , sensorimotor rhythm , theta wave . See also biological clock , chronobiology , Zeitgeber . Compare circadian rhythm , circannual rhythm , ultradian rhythm . [From Latin infra under + dies a...

sleep

sleep n.   Quick reference

A Dictionary of Psychology (4 ed.)

Reference type:
Subject Reference
Current Version:
2015

...III, and IV NREM sleep respectively. See also basal forebrain , basic restactivity cycle , circadian rhythm , delta sleep-inducing peptide , delta wave , dream ( 1 ) , dyssomnias , hypnagogic image , hypnopompic image , K complex , locus coeruleus , magnocellular nucleus , melatonin , nucleus gigantocellularis , paradoxical sleep , parasomnias , PGO spike , pineal gland , polysomnography , pseudoinsomnia , REM atonia , REM rebound , sleep spindle , sleep–wake cycle , sleepwalking , slow-wave sleep , subcoerulear nucleus...

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