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Article type: Research Article
Authors: Abe, K.; | Yokoyama, R. | Yanagihara, T.
Affiliations: Department of Neurology, Osaka University Medical School, Osaka, Japan | Division of Speech Therapy, Kishiwada Tokushukai Hospital, Osaka, Japan
Note: [] Correspondence to: K. Abe, Department of Neurology, Osaka University Hospital, 2-2 Yamadaoka, Suita, Osaka 565, Japan
Abstract: We report a right-handed man who developed selective Kana (phonogram) agraphia following an infarct in the non-dominant right cerebral hemisphere. His ability for comprehension, reading and writing of Kanji (ideogram) was unaffected. Kana errors consisted of substitution with another letter and the number of target words was well preserved. The lesion responsible for his Kana agraphia included the right Wernicke's area (the posterior one-third or one-half of the superior temporal gyrus) on MRI, but he did not have aphasia. Based on these findings, we conclude that the language function in some dextral people may be partially lateralized to the right cerebral hemisphere.
Keywords: Crossed agraphia, Graphic center, Kana, Language lateralization
DOI: 10.3233/BEN-1995-8208
Journal: Behavioural Neurology, vol. 8, no. 2, pp. 121-124, 1995
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