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Sleep Technology


The latest on all issues affecting sleep technologists, including trends, insights, tips and more.

Blog Feature

quality sleep | NREM sleep | Parasomnias

Parasomnia Overlap Disorder

By: Regina Patrick, RPSGT, RST
June 3rd, 2021

In 1934, French researcher Henri Roger coined the term parasomnie (in English, parasomnia; from the Greek para meaning “alongside” and Latin somnum meaning “sleep”) for phenomena that occur in the transition from sleep to wake or vice versa. A parasomnia can occur during the transition between nonrapid eye movement (NREM) sleep and wake (i.e., NREM parasomnias such as sleepwalking, sleep terrors, confusional arousal, sleep-related eating disorder) or during the transition between rapid eye movement (REM) sleep and wake (i.e., REM parasomnias such as REM sleep behavior disorder [RBD], recurrent isolated sleep paralysis, nightmare disorder). A parasomnia has the following features: recurrent episodes of incomplete awakening from sleep, an inappropriate or lack of response to intervention or redirection during an episode, limited or no cognition of dream imagery and partial or complete amnesia for the event. In addition, the nocturnal disturbance is not explained by another sleep, psychiatric or medical disorder or medication/substance use. Some people experience REM parasomnias and NREM parasomnias, a condition called parasomnia overlap disorder (POD). A person with POD has a disorder of arousal (e.g., sleepwalking confusional arousal, sleep terror) and rapid eye movement sleep behavior disorder (RBD; which involves vivid, often unpleasant dreams; vocalization during sleep and sudden, often violent, arm and leg movements during REM sleep [i.e., dream-enacting behavior]).

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Blog Feature

quality sleep | quantity of sleep | quantity vs quality sleep

Quantity of Sleep vs Quality of Sleep: Why This Is Important

By: Kevin Asp, CRT, RPSGT
January 22nd, 2020

When you've had a good night's sleep, you can definitely tell. You wake up feeling full of energy, refreshed, and you're ready to begin your day. Sleep is important for both mental and physical well-being.

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