PSY 102 Lecture Notes - Lecture 5: Near-Death Experience, Rapid Eye Movement Sleep, Sleep Paralysis
15 Aug 2016
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Document Summary
Our subjective experience of ourselves and the world around us. Constantly changing awareness of our thoughts, feelings, bodily sensations. Level of alertness adapts to shifting demands of daily life (selective attention, cocktail party effect) Cyclical changes in biological processes that occurs on a 24-hour basis. Disruptions caused by jet lag are correlated with health problems. Biological clock: suprachiasmatic nucleus (scn) located in hypothalamus. Most people need around 16 hours of sleep. Students who sleep and wake early, tend to perform better. Short term: depression, attention issues, learning dif culties, slow rt"s, hallucinations. Longer term: weight gain, increased risk for high blood pressure, diabetes, cardiovascular problems, reduced immune system response. Kleitman and dement (1957): recorded brain activity during sleep, discovered that: We repeatedly pass through 5 stages each night. Stages 1-4 are non-rem sleep (no eye movements, fewer vivid dreams) Stage 5 is rem sleep (rapid eye movement, frequent vivid dreams)
