Sleep Disorders - broad range of illnesses arising from many causes, including, dysfunctional sleep mechanisms, abnormalities in physiological functions during sleep, abnormalities of the biological clock, and sleep disturbances that are induced by factors extrinsic to the sleep process Sleep efficiency (SE) - proportion of sleep in the period potentially filled by sleep--ratio of total sleep time to time in bed Sleep Episode - interval of sleep that may be voluntary or involuntary Sleep Extension - extending sleep time by increasing the time in bed Sleep Fragmentation - brief arousals occurring throughout the night, reducing the total amount of time spent in the deeper levels of sleep.
(illnesses; arising; from many causes, including, dysfunctional sleep mechanisms, abnormalities in physiological functions during sleep, abnormalities of the biological clock, and sleep disturbances that are induced by factors extrinsic to the sleep process Sleep efficiency (SE) - proportion of sleep in the period) (Sleep Fragmentation - brief arousals; occurring; T:throughout the night) (abnormalities of the biological clock, and sleep disturbances; are induced; by factors extrinsic to the sleep process Sleep efficiency) (the period; potentially filled; by sleep--ratio of total sleep time to time in bed) (the total amount of time; spent; L:in the deeper levels of sleep) (sleep; may be; voluntary or involuntary Sleep Extension - extending sleep time)
illnesses Sleep Fragmentation - brief arousals abnormalities of the biological clock, and sleep disturbances the period the total amount of time sleep
arising occurring are induced potentially filled spent may be
from many causes, including, dysfunctional sleep mechanisms, abnormalities in physiological functions during sleep, abnormalities of the biological clock, and sleep disturbances that are induced by factors extrinsic to the sleep process Sleep efficiency (SE) - proportion of sleep in the period
T:throughout the night
by factors extrinsic to the sleep process Sleep efficiency
by sleep--ratio of total sleep time to time in bed
L:in the deeper levels of sleep
voluntary or involuntary Sleep Extension - extending sleep time