| sleep architecture |
The organization of brain wave activity characteristic of each of the stages of sleep.
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| sleep debt |
The consequences (e.g., fatigue, loss of concentration, or difficulties in coping or job performance) of getting less than an optimal amount of sleep. Most people feel and perform best with 6 to 8 hours of sleep each night.
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| sleep deprivation, effects of |
SEE: sleep.
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| sleep disorder |
Any condition that interferes with sleep, excluding environmental factors such as noise, excess heat or cold, movement (as on a train, bus, or ship), travel through time zones, or change in altitude. The major classes of sleep dis
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| sleep fragmentation |
Arousals and awakenings that disrupt the normal stages and architecture of sleep. These events, which occur commonly in patients who have sleep apnea or chronic pain, contribute to daytime sleepiness and other health problems
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