PS260 Study Guide - Seasonal Affective Disorder, Delta Wave, Sleep Spindle

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9 Mar 2014
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Psychology chapter 5 notes: body rhythms and mental states. Consciousness: awareness of oneself and the environment. Biological rhythms: a periodic, more or less regular fluctuation in a biological system; may or may not have psychological implications. Entrainment: synchronization of biological rhythms within rather than by external cues. Circadian rhythm: biological rhythm with a period of about 24 hours (sleep-wake cycle: reflect the adaptation of organisms to the many changes associated with rotation of earth on its axis (temperature, light, etc. , body"s clock: Internal desynchronization: state in which biological rhythms are not in phase with one another (e. g: airplane flights across time zones) Premenstrual syndrome (pms): the symptoms associated with the days preceding menstruation: physical symptoms do occur; but emotional symptoms are very rare. Stage 1: brain waves become small and irregular, and you feel yourself drifting on the edge of consciousness, in a state of light sleep. If awakened you may recall fantasies or a few visual images.

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