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Japanese

Neuronal activities during paradoxical sleep. Mitsuaki YAMAMOTO 1 , Hiroshi NAKAHAMA 2 , Keisetsu SHIMA 1 , Kohjiro AYA 1 , Tohru KODAMA 1 , Hajime MUSHIAKE 1 , Masahiko INASE 1 1Division of Neurophysiology, Institute of Brain Diseases, Tohoku University School of Medicine 2Department of Physiology, School of Medicine, Tokai University pp.1010-1022
Published Date 1986/12/10
DOI https://doi.org/10.11477/mf.1431905846
  • Abstract
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Spontaneous activities of central single neurons of a cat were recorded from mesencephalic reti-cular formation, somatosensory cortical area I, ventrobasal complex of thalamus and hippocampus during natural sleep-waking states with a head-restrained condition. The state of brain was monitored by electroencephalograms of somato-sensory area, hippocampus, lateral geniculate nucleus, electromyograms of neck muscles and orbicularis oculi muscle, electrooculogram, respira-tion curve and electrocardiogram. Paradoxical sleep (PS) was judged by cortical EEG desyn-chronization, continuous hippocampal theta-wave activity and complete abolition of tone in neck muscles ; slow-wave sleep (SWS), by the low-frequency and high amplitude cortical EEG with fewer spindle bursts; and highly attentive state (BW) with sustained attention to a pair of small birds in a cage, by cortical EEG desynchronization and the high EMG activity in orbicularis oculi muscles. These three states were considered to be at least quasi-stationary.


Copyright © 1986, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 1882-1243 印刷版ISSN 0001-8724 医学書院

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