REM Sleep


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REM sleep

[′rem ‚slēp]

REM (Rapid Eye Movement) Sleep

(dreams)

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 ?
To explain the mechanism of REM sleep there are three animal models available (5).
"Strikingly, however, the REM sleep group improved by almost 40% over their morning performances." The findings were reported in the journal, Proceedings of the National Academy of Sciences..
Nonetheless, "in the current study, we did not fred significant differences in REM sleep time and REM activity between children with and without internalizing disorders."
Induction by cannabis sativa (marihuana) of rhythmic spike discharges overriding REM sleep electrocorti-cogram in the rat.
In the control group, the total amounts of AW and REM sleep were lower during the rest period than during the active period, and the total amount of QW, the total amount of NREM sleep, and the TST were higher (Table 4).
Studies revealed marked EEG slowing in the central and occipital regions during both wakefulness and REM sleep and a loss of resting-state delta-band functional connectivity in patients with iRBD compared with healthy controls.[43],[44],[45],[46],[47],[48] The EEG pattern shown in RBD patients was similar to that of patients with DLB or PD.[47] The slowing during wakefulness in the posterior cortical regions predicted an increased risk of conversion of RBD to DLB or PD.[48]
RBD has special clinical dream-enacting behavior symptoms such as repeated episodes of sleep-related vocalization and/or complex motor behaviors during REM sleep, correlating with dreams [50].
Aim for 20 to 30 minutes, which puts you into the earliest stages of REM sleep and lets you wake up easily, feeling refreshed.
Stage five is REM sleep. During this dream stage, the eyes move rapidly and there is increased brain activity as well as higher body temperature, quicker pulse and faster breathing.
'Dreamless REM sleep is anti-ageing, great for the immune system and repairs the body,' says Dr Nerina.
Results show that these elephants slept an average of two hours a night, that they slept in different places every night and usually between 1 and 6 am, that they experience REM sleep every three to four days, and that they sleep in several discontinuous breaks.
In people with REM sleep behavior disorder, RBD, muscles remain active.