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Physiological Psych
Exam 3
| Term | Definition |
|---|---|
| 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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