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Physiological Psych

Exam 3

TermDefinition
Measuring the sleep cycle Electrodes Measure: muscular eye activity, muscular facial activity, and general brain activity
Presleep Beta Waves: desynchrony = alert and attentive Alpha WAves: increased synchrony = starting to get drowsy and brain starting to relax
Why does the brain show uneveness while you're awake? you are engaging in different areas all the time (shifting)
Non-REM sleep Stage 1: theta waves (drowsy sleep, sudden twitches and jerks) Stage 2: sleep spindles and K-complexes, muscular activity lowers and conscious awareness of environment disappears
sleep spindles burst of activity associated with memory consolidation (information you've learned throughout the day is gluing itself to your brain)
K-complexes transition to slow waves
Non-REM sleep continued Stage 3: start of delta waves, night terrors, bedwetting, sleepwalking, and sleep talking stage 4: delta waves, deepest form of sleep, insensitive to external stimulation
REM rapid eye movement, wave pattern similar to stage 1, intense dreaming, could become paralyized
sleep cycle each cyle is about 90 minutes long, about 5 cycles in a typical night sleep
brain chemistry and sleep ACh, Norepeinephrine, Serotonin, Histamine, and Orexin are all increased during arousal and decreased during sleep
sleep deprivation
ventrolateral preoptic area
narcolepsy only lasts a few minutes, almost primarily non-genetic (sporadic), cataplexy (paralysis at wrong time)
cataplexy REM sleep intruding into wakefulness, massive inhibition of motor neurons in spinal cord, and brought in by strong emotional reaction
sleep functions restoration, growth, energy conservation, and brain development
tumors
brain cancer
brain tumors
Created by: ecoco16
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