左中大脳動脈閉塞による失語症

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  • A case report on the aphasic with the occlusion of the left middle cerebral arthery
  • ―言語機能の回復過程―

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The purpose of this paper is to report the recovery process of the aphasia in 55-year-old male with the occlusion of the left middle artery.<BR>At the episode, his chief complaint was an inability to express himself by means of oral speech and hand-writing, although he could understand simple spoken words. This aphasia was diagnosed as the dominantly expressive type.<BR>Neurological examination, including EEG and angigraphy, revealed the brain damage in both cortical and subcortical regions at the left frontal, central and temporal areas.<BR>Pure tone audiogram was almost normal. In the early stage speech discrimination score showed a slight impairment which recovered to normal range within 40 days. Dichotic listening test was poor and it showed the left ear dominance in 90 days.<BR>Auditory and visual comprehension was slightly impaired at first, but he had little trouble in understanding daily life conversation. As for writing, he made many mistakes in copy-writing and dictation. It improved within 60 days.<BR>Verbal apraxia was pronounced and voluntary speech was most severely impaired. These disturbances were diminished gradually within 90 days except for word finding difficulty.

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