PSY 102 Lecture Notes - Lecture 6: Excessive Daytime Sleepiness, Slow-Wave Sleep, Sleep Deprivation
12 Jan 2017
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Common parlace: consciousness denotes being a(cid:449)ake a(cid:374)d respo(cid:374)si(cid:448)e to o(cid:374)e"s e(cid:374)(cid:448)iro(cid:374)(cid:373)e(cid:374)t. State of arousal relate to certain functions of brain. State of consciousness can be divided: conscious vs not being conscious, normal and altered states, e. g. , dreaming. Altered states induced by psychoactive drugs; meditation; hypnosis. Our circadian rhythm (biological clock) refers to biological changes that occur on a roughly 24-hour basis. Regulated by neurons in the suprachiasmatic nucleus (scn), which makes us feel drowsy @ different. Includes hormone release and body temperature. times of day + night. Falling asleep is triggered by an increase in melatonin. Disruptions of circadian rhythms (jet lag, late shifts) can cause numerous health problems. We cycle through five stages of sleep in roughly 90 minute cycles. Stages 1-4: non-rem sleep: no eye movements, fewer dreams, memory retention, stage 1: drowsiness, can be awoken easily, eyes and muscles move asleep.
