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15 Cards in this Set
- Front
- Back
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Polysomnography
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-Measuring sleep
-EEG -EOG -EMG |
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EEG
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-Electrical
-Brain waves |
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EOG
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-Optic
-Eye movements |
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EMG
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-Muscle activity
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Stage 2 sleep
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-Sleep spindles
-K complex |
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Stages 3 and 4 sleep
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-Slow wave sleep
-Delta activity |
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REM
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-Looks more like awake/early stages
-Brain waves unsynchronized again -Most dreams -Eye movements -Easily awakened -Paralyzed |
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Sleep patterns
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-REM cycle after 90 minutes
-More REM at end of night -More slow wave sleep at beginning of night -Based on time, not amount of time asleep |
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Sleep for Recuperation
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-REM helps you consolidate memories (needed for learning)
-Brain rests during slow-wave sleep -More stage 4 sleep after mental exertion -Not related to physical exertion |
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Sleep for Survival
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-Grazing animals sleep less
-More time to feed -Prey animals sleep less -Less vulnerable to predators |
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Sleep Deprivation
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-Sleepiness
-Mood -Attention -Increased stress and immune response |
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Slow wave sleep deprivation
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-more slow wave sleep in subsequent nights after total deprivation
-Less sleep=less 1 and 2, same amount of slow wave -if woken during slow wave, feel sleepy during day |
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REM sleep deprivation
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-REM rebound in subsequent nights after REM deprivation
-No impaired functioning -No daytime sleepiness -antidepressants decrease REM -Some experiments show no REM rebound -May just be a break from slow wave sleep -May be to allow oxygen to eyes |
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Activation-Synthesis Hypothesis
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-Dreaming
-Cortex tries to make sense of random brain stem activity from pons -External stimuli incorporated |
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Clinico-Anatomical Hypothesis
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-Dreaming
-No sensory information from V1, so other parts of brain make up info -No censoring by prefrontal cortex -Builds on Activation-Synthesis Hypothesis |
