PSYCH 10:12 - Monday Sleep Typically defined through behavior and psychophysiology EEG records(10-20 system A basic sleep study Electrical activity in

PSYCH 10:12 - Monday Sleep Typically defined through...

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Monday October 12, 2015 Sleep Typically defined through behavior and psychophysiology EEG records (10-20 system) A basic sleep study: EEG—electroencephalogram Electrical activity in the brain EMG—electromyogram Looks at muscle action potentials EOG—electrooculogram Measure of action potentials in muscles in eye movements (useful for examining REM sleep) 10-20 System EEG diagram Left to right (A1 to A2) Top to bottom G to 01/02) Stages of Sleep The entire cycle is ~90 minutes Stages 1-4 are non-rem (nREM) College students tend to go directly into REM See table on next page* REM sleep= autonomic nervous “storm” NON-REM REM Move freely Blood pressure : low, steady Heart rate : slow, steady Respiration : slow, steady No REM
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Unformatted text preview: Bodily restora±on Metabolic house cleaning Inhibited (ex. muscle twitch) Blood pressure : highly variable Heart rate : Fast and irregular Respira±on : Fast and irregular REM Learning and memory Emo±on and coping Stage of Sleep CharacterisTcs Stage W Not an actual stage Drowsy wakefulness Alpha waves: 8-12 HZ Stage 1 Very light, people woken up during this stage won’t know they were asleep Stage 2 10 minutes transiTon stage from light sleep (stage 1) into very deep sleep (stages 3 & 4) Medial thalamus generates sleep spindles Stage 3 First delta appearance: 1-4 HZ Stage 4 Greater than 50% delta Rem Rapid eye movement and dreams Paradoxical sleep...
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