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Japanese

THE MECHANISM OF UNILATERAL SPATIAL NEGLECT Mutsuko Sato 1 , Nobuyuki Yasui 2 , Tsunesaburo Kobayashi 3 , Kenji Nakajima 3 , Yuki Tsukahara 1 , Akiko Nakano 1 1Neuropsychological Labolatory, Research Institute for Brain and Blood Vessels-AKITA 2Departments of Surgical Neurology, Research Institute for Brain and Blood Vessels-AKITA 3Departments of Neurology, Research Institute for Brain and Blood Vessels-AKITA pp.403-408
Published Date 1983/4/1
DOI https://doi.org/10.11477/mf.1406205111
  • Abstract
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We investigated a test for unilateral spatial neglect and discussed the mechanism of this symptom.

Seventy eight patients with lesions on the right cerebral hemisphere were examined on line bisection, line cancellation, figure copying, clock drawing and location on the map.

The statistical analysis revealed (1) there were no correlations between line bisection and clock drawing or between line bisection and location ; ( 2) those with abnormal results on line bisection were apt to indicate normal results on line cancel-lation and figure copying, while in line cancella-tion, figure copying, clock drawing and location, normal results on one task meant normal results on the other. These results indicated clock draw-ing and location might include different factors from other tasks, line bisection was the most sensitive task for unilateral spatial neglect, and abnormality on line cancellation might be similar to that figure copying.

Unilateral spatial neglect may be based on several disorders, and it may be assumed to have several aspects. One of these disorders may be defective searching. Unilateral spatial neglect may be more severe when there is sensory disturbance (hemianopsia) with a searching deficit. Otherdisorders, such as cognitive disturbance, memory disturbance and so on, may also be associated with unilateral spatial neglect, and it is necessary to consider the versatilety of this symptom.


Copyright © 1983, 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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