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The current formal name established in the third edition of the International Classification of Sleep Disorders (ICSD-3) is delayed sleep-wake phase disorder. Earlier, and still common, names include delayed sleep phase disorder (DSPD), delayed sleep phase syndrome (DSPS), delayed sleep phase type (DSPT), and circadian rhythm sleep disorder. [37]
Here is an example of how chronotherapy could work over a week's course of treatment, with the patient going to sleep 3 hours later every day until the desired sleep and wake time is reached. [1] Day 1: sleep 3:00 am to 11:00 am; Day 2: sleep 6:00 am to 2:00 pm; Day 3: sleep 9:00 am to 5:00 pm; Day 4: sleep 12:00 pm to 8:00 pm; Day 5: sleep 3: ...
Some occur during normal sleep: as an example, sleep talking occurs at some time in most normal sleepers. Some lie on the continuum between normal and abnormal: as an example, snoring without associated airway compromise, sleep disturbance, or other consequences is essentially normal, whereas heavy snoring is often part of obstructive sleep apnea.
Known as slow-wave sleep or stage 3 non-REM sleep, this is the deepest stage of sleep and the hardest to wake up from. Brain activity slows down, muscles and bones strengthen, hormones regulate ...
Advanced Sleep Phase Disorder (ASPD), also known as the advanced sleep-phase type (ASPT) of circadian rhythm sleep disorder, is a condition that is characterized by a recurrent pattern of early evening (e.g. 7-9 PM) sleepiness and very early morning awakening (e.g. 2-4 AM). This sleep phase advancement can interfere with daily social and work ...
The related and more common delayed sleep phase disorder was not described until 1981. The first detailed study of non-24 in a blind subject was by Miles Le and his colleagues in 1977. The researchers reported on a 28-year-old male who had a 24.9-hour rhythm in sleep, plasma cortisol, and other parameters.
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Delayed sleep phase disorder, a circadian rhythm disorder, formerly named DSPS Died without surviving issue , (Latin: d.s.p. suivre ) D'jermaya Solar Power Station , a solar power plant in Chad