circadian rhythm

circadian rhythm

any periodic variation in physiological or behavioral activity that repeats at approximately 24-hour intervals, such as the sleep–wake cycle. Also called diurnal rhythm. Compare infradian rhythm; ultradian rhythm. See also biological rhythm.

Related Terms

nocturnal myoclonus

nocturnal myoclonus involuntary jerking of the limbs (myocl...

SCL-90–R

SCL-90–R abbreviation for Symptom Checklist-90–Revised.

spherical lens

spherical lens a lens in which either or both of the surfac...

cerebral trauma

cerebral trauma any damage to the brain, which may be tempo...

self-identity

self-identity n. see identity.

micturition

micturition n. see urination. —micturate...

Quick Info

Category Psychology Term
Definitions 1
First Letter C

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