PSYC 211 Lecture Notes - Lecture 12: Electromyography, Muscle Tone, Preoptic Area
6 Nov 2018
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Non-rem sleep stage 2 (and 1) considered light sleep. When laying in bed trying to fall asleep. Deepest stages of sleep (stages 3 and mostly 4) After 2-3 weeks, begin to lose control of their metabolic process and body temperature. For dolphins: half the cerebral hemispheres sleep while the other stays awake. Preyed animals: short intervals that are only a few minutes. Larger the animal, less sleep they require and vice versa. Body mass, brain mass, overall metabolic rate but metabolic rate per kg (or per cell), heart rate, life span, total sleep time, length of sleep cycles. When large animals get larger, they get savings, distributions networks become more efficient and then each cell doesn"t have to work as hard. Problem: really doesn"t save much energy and doesn"t relate how much energy is used. Gives the brain a chance to "update" or "change" after everything that was learned. Can"t be done when the brain is being actively used.
