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Laterality of delta waves during all‐night sleep
Author(s) -
Sekimoto Masanori,
Kajimura Naofumi,
Kato Masaaki,
Watanabe Tsuyoshi,
Nakabayashi Tetsuo,
Takahashi Kiyohisa,
Okuma Teruo
Publication year - 1999
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 - 10.1046/j.1440-1819.1999.00506.x
Subject(s) - laterality , asymmetry , delta , delta rhythm , sleep (system call) , audiology , electroencephalography , psychology , brain asymmetry , delta wave , slow wave sleep , neuroscience , physics , lateralization of brain function , medicine , alpha rhythm , computer science , quantum mechanics , astronomy , operating system
In order to clarify the functional asymmetry of the brain function during sleep, period‐amplitude analysis of delta electroencephalogram activity was performed on polysomnograms in 12 right‐handed healthy males. Electroencephalograms were recorded from disc electrodes placed at C3, C4, O1 and O2 (10–20 electrode system), using A1 + A2 for reference. Although there were no significant differences in delta counts between O1 and O2, delta counts of C3 were significantly larger than those of C4. These results suggest that there exists distinct laterality in the number of delta waves in the central region, reflecting the functional asymmetry of the brain during sleep.