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Some sensory stimuli generate spontaneous K‐complexes
Author(s) -
FUSHIMI MASAHITO,
NIIYAMA YOSHITSUGU,
FUJIWARA RYUICHI,
SATOH NAOKI,
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.tb01000.x
Subject(s) - stimulus (psychology) , n100 , sensory system , electroencephalography , psychology , spontaneous recovery , p200 , audiology , neuroscience , perception , cognitive psychology , visual perception , medicine , event related potential
The present study was performed in order to determine whether spontaneous K‐complex are induced by sensory stimuli. Electroencephalogram (EEG) segments in stage 2 sleep containing an evoked K‐complex or spontaneous K‐complex were separately averaged with respect to the peak of N300, one of the main components constituting the K‐complex. Small negative and positive components were found immediately before the main components of spontaneous K‐complex in averaged EEG. These two components were judged to correspond to N100 and P200 induced by the sound stimulus. The present findings suggest that the spontaneous K‐complex is not a spontaneous phenomenon but that it is induced by sensory stimuli.