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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]
Wake back up with a post-nap routine. Just as waking up in the mornings feels easier after getting immediate sunlight, showering, exercising or even listening to music, you may also consider these ...
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Polyphasic sleep is the practice of sleeping during multiple periods over the course of 24 hours, in contrast to monophasic sleep, which is one period of sleep within 24 hours. Biphasic (or diphasic , bifurcated , or bimodal ) sleep refers to two periods, while polyphasic usually means more than two. [ 1 ]
Aim for taking a nap around 6 or 7 hours after waking up, and try to nap at the same time every day. Mednick recommended saving longer naps for the weekends, or when you have time to sleep a full ...
In the two process model of sleep, it has been proposed, that depression is characterized by a deficiency in the building up of process S. [27] Therefore, sleep deprivation might increase process S in the beginning, but a relapse occurs, when sleep deprivations isn't applied anymore and process S returns to a low level. [27]
Sleep deprivation, also known as sleep insufficiency [2] or sleeplessness, is the condition of not having adequate duration and/or quality of sleep to support decent alertness, performance, and health. It can be either chronic or acute and may vary widely in severity.
Sleep inversion may be a symptom of elevated blood ammonia levels [2] and is often an early symptom of hepatic encephalopathy. [3] Sleep inversion is a feature of African trypanosomiasis, after which the disease takes its common name, "African sleeping sickness"; [4] sleep-wake cycle disturbances are the most common indication that the disease has reached the stage where infection spreads into ...