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Basal ganglia and arousal—Reaction time study in parkinsonian patients. Fusako YOKOCHI 1 , Ryuichi NAKAMURA 2 , Hirotaro NARABAYASHI 1 1Department of Neurology, Juntendo University School of Medicine 2Research Institute of Rehabilitation Medicine, Tohoku University School of Medicine pp.841-846
Published Date 1986/10/10
DOI https://doi.org/10.11477/mf.1431905830
  • Abstract
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Impairment of psychomotor function in Parkinson's disease (PD) has been reported by many authors, using reaction time (RT) measurements. RT studies are interpreted through two models of theoretical information processing: a structural model and a capacity model. All mental activities are assumed to require two types of input to the corresponding structure: an information input specific to that structure, and a nonspecific input such as "effort", "attention" or "capacity". To explain man's limited ability to carry out multiple activities at the same time, it is explained that the total amount of attention which can be employed is limited (limited capacity). Therefore, the allocation policy, i.e the evaluation of demands (an easy task demands little effort and a difficult task demands much) within the limited capacity becomes important in order to accomplish the tasks. The limited capacity is also closely related with arousal level. In this paper arousal level in PD is examined and interpreted by using RT methods.


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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