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Cortical activity of REM sleep often occurs earlier than other physiological phenomena
Author(s) -
NIIYAMA YOSHITSUGU,
SERINE ATSUSI,
FUSHIMI MASAHITO,
HISHIKAWA YASUO
Publication year - 1998
Publication title -
psychiatry and clinical neurosciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.609
H-Index - 74
eISSN - 1440-1819
pISSN - 1323-1316
DOI - 10.1111/j.1440-1819.1998.tb01001.x
Subject(s) - sleep (system call) , neuroscience , psychology , electroencephalography , non rapid eye movement sleep , audiology , medicine , cognitive psychology , computer science , operating system
N300 appearing in response to sound stimulus was used as an index to determine the occurrence of cortical activity characterizing REM sleep. In 5/10 subjects, marked reduction of N300 amplitude occurred even in the period of 0.5‐2.5 min immediately preceding the appearance of muscle atonia characterizing REM sleep. Neither muscle atonia nor rapid eye movements appeared prior to the marked reduction of N300 amplitude in any subject. This suggests that the cortical activity characterizing REM sleep sometimes occurs a few minutes (or less) earlier than other physiological phenomena.