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REM-on neurons are primarily cholinergic (i.e., involve acetylcholine); REM-off neurons activate serotonin and noradrenaline, which among other functions suppress the REM-on neurons. McCarley and Hobson suggested that the REM-on neurons actually stimulate REM-off neurons, thereby serving as the mechanism for the cycling between REM and non-REM ...
The rem and millirem are CGS units in widest use among the U.S. public, industry, and government. [4] However, the SI unit the sievert (Sv) is the normal unit outside the United States, and is increasingly encountered within the US in academic, scientific, and engineering environments, and have now virtually replaced the rem. [5]
The whole period normally proceeds in the order: N1 → N2 → N3 → N2 → REM. REM sleep occurs as a person returns to stage 2 or 1 from a deep sleep. [18] There is a greater amount of deep sleep (stage N3) earlier in the night, while the proportion of REM sleep increases in the two cycles just before natural awakening. [15]
All of the following parasomnias can arise during REM sleep: nightmare disorder; isolated sleep paralysis; and REM sleep behavior disorder (the acting out of one's dreams), which can lead to ...
[7]: 39 R.E.M. is well known as an abbreviation for rapid eye movement, the dream stage of sleep; however, sleep researcher Rafael Pelayo reports that when his colleague William Dement, the sleep scientist who coined the term REM, reached out to the band, Dement was told that the band was named "not after REM sleep". [11]
RBD is a sleep disorder characterized by the loss of normal skeletal muscle atonia during REM sleep and is associated with prominent motor activity and vivid dreaming. [6] [2] These dreams often involve screaming, shouting, laughing, crying, arm flailing, kicking, punching, choking, and jumping out of bed.
Rem, an android in Logan's Run; Rem, in Dream Hunter Rem; Rem Saverem, in Trigun; Rem, in Bobobo-bo Bo-bobo; Rem (Death Note), a Shinigami in Death Note; Rem Kaginuki, a devil in Dance with Devils; Rem (Re:Zero), a character in the light novel/anime series Re:Zero − Starting Life in Another World; Rem Galleu, in How Not to Summon a Demon Lord
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