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Studies on the seasonal changes of minor tremor:Analysis by automatic frequency analyser Ikuo YAMAUCHI 1 , Itaru KAMACHI 1 , Kazutoyo INANAGA 1 1Dep. of Neuropsychiatry, Kurume Univ. School of Medicine pp.101-107
Published Date 1964/2/1
DOI https://doi.org/10.11477/mf.1406201601
  • Abstract
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Minor tremor (MT) of 19 normal subjects were observed each season for the purpose of investigating the seasonal variation, MT was recorded from the thenar.

1) Frequency anlyses of MTs in 15 normal subjects in Summer (30-32℃), Autumn (16-18℃) and Winter (7.5-11℃) showed that the ratio of theta band increased in summer, that of beta increased in autumn and that of alpha band increased in winter.

2) Frequency analyses of MTs in 4 normal female subjects obtained in air-conditioned room showed that frequency graph with much slow activity was seen from April to May, with much fast activity was seen from Nov-ember to February and from June to July it was slightly faster than that on April and May.

3) From above observations it was conclu-ded that the frequency of MT was seasonally variable, probably due to the seasonal varia-tions of autonomic nervous system.


Copyright © 1964, 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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