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19 Cards in this Set
- Front
- Back
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circadian rhythm
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rhythm that completes a full cycle every 24 hours; synonym for diurnal rhythm
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delta sleep
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deep sleep, occurring during stage III and especially stage IV in NREM sleep
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dyssomnias
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sleep disorders characterized by insomnia or excessive sleepiness
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enuresis
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involuntary urination; most often used to refer to a child who involuntarily urinates during the night
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insomnia
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difficulty in falling asleep, intermittent sleep, or early awakening from sleep
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hypersomnia
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condition characterized by exessive sleeping, especially daytime sleeping
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melatonin
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a natural chemicalproduced at night that decreases wakefulness and promotes sleep
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narcolepsy
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condition characterized by an uncontrolled desire to sleep
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nocturnal myoclonus
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condition characterized by marked muscle contraction that results in the jerking of one or both legs during sleep
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non-rapid eye movement (NREM) sleep
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non-rapid eye movement that characterizes four stages of sleep
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parasomnias
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patterns of waking behavior that appear during sleep (eg, sleep walking, sleep talking, nocturnal erections)
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rapid eye movement (REM) sleep
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rapid eye movement that characterizes the dream state of sleep
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rest
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condition in which the body is in a decreased state of activity, with the consequent feeling of being refreshed
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restless leg syndrome
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a condition in which patients are unable to lie still and report experiencing unpleasant creeping, crawling, or tingling sensations in the legs
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sleep
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state of altered consciousnesss throughout which varying degrees of stimuli preclude wakefulness
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sleep apnea
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a condition in which a person experiences the absence of breathing (apnea) or diminished breathing effort (hypopnea) during sleep between snoring intervals
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sleep cycle
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passage through the four stages of NREM sleep (I, II, III, IV), then reversal (IV, III, II), and finally, instead of reentering stage I and awakening, entering REM sleep and returning to stage II
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sleep deprivation
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a decrease in the amount, consistency, and quality of sleep; results from decreased REM or NREM sleep
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somnambulism
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sleepwalking
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