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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.

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Psychology term of the day

December 23rd 2024

kinesthesis

kinesthesis

n. the sense that provides information through receptors in the muscles, tendons, and joints, enabling humans and other animals to control and coordinate their movements, including walking, talking, facial expressions, gestures, and posture. Also called kinesthesia; kinesthetic sense; movement sense. See proprioception. —kinesthetic adj.