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SPEECH ARREST AND"PURE"AGRAPHIA Yuko Yashima 1 , Kyoko, Ishige 1 , Shigeo Nakanishi 1 , Hisashi Kumashiro 1 1Department of Neuropsychiatry, Fukushima Medical College pp.1039-1045
Published Date 1980/10/1
DOI https://doi.org/10.11477/mf.1406204656
  • Abstract
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This paper intends to analyse two cases of speech arrest. The patients suffer from the frontal tumor which affects supplementary motor area. The first case is accompanied with"pure"agraphia.

Case 1 A 32 year-old right handed male has speech arrest and"pure"agraphia. Spontaneous speech, naming, repetition and reading are not impaired. Radiographic (C.A.G., CT scan) and surgical localization check is attempted in the paramedian left frontal lobe which controls supple-mentary motor area and a solid tumor nodule of about 1.5 by 2cm in size is detected at the base of the left second frontal convolution (F2).

It is recorded that writing disturbances continue to one month and half before the tumor is removed. He can not write his signature, spontaneous writing, dictation and copying. After the partial excision of the solid tumor nodule at the base of left F2, both speech arrest and writing disturbances are improved. Apraxia and agnosia are not noticed.

Case 2 A 26 year-old right handed male has speech arrest only. Speech and writing functions are not impaired. He is intellectual. An oligo-dendroglioma is shown in the left frontal lobe which affects supplementary motor area but the lesion is not extended into the left second frontal convolution.

In both cases, speech arrest is"total"type according to Arseni's subdivision, and verbal repetition does not appear. We have realized that the lesion in the supplementary motor area causes speech arrest and that the left F2 causes"pure" agraphia. We compare our result with similar cases in the former literature, especially with "pure"agraphia cases caused by the lesion in Exner's writing center.

We conclude that"pure"agraphia can be classi-fied under the category of autonomic-kinesthetic disorders in writing functions caused by frontal lobe lesion.


Copyright © 1980, 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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