REM Sleep

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REM sleep

[′rem ‚slēp]

REM (Rapid Eye Movement) Sleep


In 1953 sleep researchers Eugene Aserinsky and Nathaniel Kleitman reported observing rapid saccadic (tracking) eye movements in sleeping subjects. These were similar in appearance to the eye movements of waking individuals. Further research found that REM sleep was often associated with reports of dreaming.

The postulate that there was a close correlation between dreams and REM sleep guided scientific dream research for a decade. Later studies, however, showed that significant dreaming could take place during non-REM (NREM) sleep. Subsequent research has shown that—although the older correlation of REM sleep with dreaming does not hold—it is possible to draw a meaningful distinction: namely, that REM dreams tend to be more active, visually rich, and bizarre than NREM dreams.

References in periodicals archive ?
Possible mechanisms may include stress or anxiety, which may curtail REM sleep and increase the risk for dementia," he told Medical News Today.
The following vPSG data were obtained and analyzed: awakenings; total sleep time (TST); sleep efficiency (SE); sleep latency (SL); REM sleep latency (REML); wake after sleep onset (WASO); percentage of sleep spent in non-REM sleep stage (NREM) 1, NREM2, NREM3, and REM sleep; arousal index; apnea-hypopnea index (AHI); minimal oxygen saturation (SaO[sub]2); mean SaO[sub]2; and the percentage of time spent at SaO[sub]2 <90% (time − [SaO[sub]2 <90%]).
While the meaning of this activity is still unclear, it suggests that some neurophysiologic process related to REM sleep occurs in an area of the brain felt to be responsible for the consolidation of memory.
But mice with disturbed REM sleep had memory trouble, the researchers found.
By the end of seven to eight hours of sleep, the typical ninety-minute sleep cycle is about forty-five minutes of Stage 2 and forty-five minutes of REM sleep.
REM sleep behavior disorder: clinical profiles and pathophysiology.
Our SPECT study showed a trend toward decreased dopamine transporter density in the brain and Parkinsonism in the follow-up data of patients with REM sleep disorder who had no previous evidence of neurodegenerative disease," Hongyoon Choi, MD, a PhD candidate and researcher in the department of molecular medicine and biopharmaceutical sciences at Seoul National University Bundang Hospital, Sungnam, Korea said.
I don't think there is any marker in clinical medicine that has anything close to this amount of relative risk for developing a neurodegenerative disease Asking about REM sleep behavior disorder in your clinics tomorrow will help you diagnose disease," he said.
The patient was diagnosed as having REM sleep behavior disorder (RBD) and given an oral dose of clonazepam, 1 mg nightly.
REM sleep is the natural integration of conscious information and experiences into our subconscious and REM sleep is absolutely necessary for powerful health - both physical and mental.
During REM sleep with polysomnography monitoring one observes a low voltage mixed frequency amplitude EEG and low voltage EMG in the chin associated with intermittent bursts of rapid eye movements.