PSY 250 Lecture Notes - Lecture 8: Sleep Spindle, Circadian Rhythm, Pineal Gland
7 Aug 2018
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About: daily sleep cycle dependent on brain"s exposure to the sun; a "biological clock ; sleep/ wake cycle. 4: rem sleep; (not really called stage 5); cognitive restoration. Dreams in non-rem sleep are more: logical and based on memory consolidation. Dreams in rem sleep are more: vivid, nightmares occur, and may be a simulation of the future as an evolutionary tactic where you could deal with situations better after seeing them in the dream. Paralysis: this is so you don"t act out your dreams. 4-5 rem cycles in a night: we go into deep sleep at the beginning of the night and rem in the middle. Health: immune system, increased appetite, increased risk of diabetes, stroke, and heart disease; reaction to stress: mental health: irritability, loss of emotional regulation. Naps are: restorative, increase energy, and improve cognition(focus, attention, critical decisions) 30 mins is the most effective, but even 10 mins can be restorative.
