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Japanese

Experimental Studies on EEG in Case of Subdural Hematoma Shigeo Matsuzaki 1,2 1Surgical Clinic, Hospital of Mitsui Sunagawa Mining Station 2The First surgical Department, Hokkaido University School of Medicine pp.313-323
Published Date 1957/5/1
DOI https://doi.org/10.11477/mf.1406200573
  • Abstract
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After the study on EEG in awakefulness and sleep of normal ripe cats, observed the process of the changes with EEG that was made on 52 ripe cats with experimental "open, " " closed" and "striked blow" subdural hematoma and then examinated them patho-anatomical after 7~40 days.

1) In the EEG of the normal cats in awa-kefulness, there were in the main 20~30/μV, 15~20c/s waves in the frontal ana temporal regions, and 30~50μV, 5~10c/s waves in the occipital regions.

In the sleep were appeared spindle bursts of 30~50μV, 30~35c/s waves.

2) In EEG findings of 6 cases with sub-dural hematoma by injektion of self-blood in widely exposed dura mater are reviewed re-duction of the ampulitude in the hematoma region without change of frequency, except for 1 case.

3) In EEG findings of 8 cases with sub-dural hematoma by injection of self-blood in a little bored hole on the skull, 2 cases showed low voltage, 5 cases showed low voltage fast wave, and 1 cases showed low voltage slow wave. But abnormal EEG findings of 5 cases of them disappeared after 3~5 days.


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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