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PSY 212

Chapter 15: Sleep

TermDefinition
sleep behavior, includes several stages of sleep
EEG to monitor neural activity
EMG to monitor changes in muscle tone in different regions of the face
EOG to monitor eye movements during different stages of sleep
stages of sleep stage 1, stage 2, stage 3, stage 4, REM sleep
beta waves 13-30 Hz desynchronous waves that signify wakefulness and alertness
alpha waves 8-12 Hz waves that signify restfulness and decreased neural activity (often with eyes closed)
theta activity stage 1 sleep; relatively low frequency waves that are synchronized—transition between sleep and wakefulness
stage 2 sleep irregular firing patterns containing K complexes (high amplitude, low frequency) and sleep spindles (low amplitude, high frequency)
stage 3 sleep delta wave (slow-wave sleep) sleep signified by high-amplitude, low frequency waves (deep sleep; slow-wave sleep)
stage 4 sleep similar to stage 3 sleep, but the delta (slow-wave sleep) activity increases from 20-50% to 50%
REM sleep rapid eye movement, composed of theta activity and beta waves, being awakened from REM sleep will guarantee that you will at least partially remember the dream you were having
circadian rhythm the one that is a day in length
melatonin a hormone that induces sleepiness
insomnia inability to sleep or to obtain adequate-quality sleep, to the extent that the person feels inadequately rested
narcolepsy a disorder in which individuals fall asleep suddenly during the daytime and go directly into the REM sleep
cataplexy extreme muscle weakness/paralysis that occurs spontaneously and lasts several minutes while the person is conscious
sleep deprivation sleep dept.; long periods without sleep are never made up in their entirely
sleep attacks occur spontaneously at inappropriate times and last 2-5 minutes
sleep paralysis inability to move immediately before or after sleep
Created by: senthis1
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