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Clinical Studies on the Relation between Disturbance of Consciousness and Electroencephalogram (Part I) Shun-ichi Endo 1,2 1Department of Neurology and Psychiatry, Tokyo University School of Medicine 2Institute of Brain Research, Tokyo University School of Medicine pp.687-707
Published Date 1957/11/1
DOI https://doi.org/10.11477/mf.1406200617
  • Abstract
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The correlation between the state of con-sciousness and EEG was studied on 5 cases of hepatocerebral degeneration (loose-type), 18 cases of psychomotor epilepsy and 30 cases of petit mal epilepsy.

1) In the cases of hepstocerebral degenera-tion, EEG showed gradual changes correspond-ing with the advance of disturbance of con-sciousness. That is, alpha activity disappeared at first and was replaced by theta activity and then the stage of triphasic wave and delta activity followed. There were, however, some exceptional cases in which EEG and disturbance of consciousness did not show clear correlation.

2) Electroencephalographic patterns during psychomotor seizures were divided into 4 types: I) regular 4-8/sec. large slow waves that continued in the course of seizure, II) large irregular slow waves, III) almost flat wave pattern, IV) no remarkble changes dur-ing the seizure. In the cases of type I and II disturbance of consciousness was severe and automatic movements were simple and primitive, while in the type IV, disturbance of consciousness was slight while emotional or psychic symptoms were predominant.


Copyright © 1957, Igaku-Shoin Ltd. All rights reserved.

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電子版ISSN 2185-405X 印刷版ISSN 0006-8969 医学書院

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