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6 Cards in this Set
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- Back
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In Sleep REM is alternating with 4 distinct non-rapid eye movement stages which are
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Stage I
transitional stage from wake to sleep 5% of total time stage II specific EEG waveforms 50% of total sleep Stage III and IV slow wave sleep deepest level of sleep 20-25% of total cycle |
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when do stages 3 and 4 occur
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in first one third to one half of sleep
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when does REM occur
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cyclically throughout the night, alternating with NREM usually every 80-100 minutes
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what is transient insomnia
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can be caused by stress, jet lag, or physical environment
may last several days relieved by exercise, bath, milk, change bedroom |
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what s short -term insomnia
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stress, illness, or bereavement
may linger up to 3 weeks |
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long term insomnia
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last more than 3 weeks
calls for an extensive diagnostic examination |
