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Meaning,Phonological,Orthography and Kinestic Route of Reading and Writing:A Case with Alexia and Agraphia due to the Left Parietal Lesion Keiko Endo 1,2 , Kyoko Suzuki 3 , Kazumi Hirayama 4 , Toshikatsu Fujii 2 , Toshihiro Kumabe 5 , Etsuro Mori 2 1Department of Rehabilitation,Tohoku University Hospital 2Department of Behavioral Neurology and Cognitive Neuroscience,Tohoku University Graduate School of Medicine 3Department of Clinical Neuroscience,Yamagata University Graduate School of Medicine 4Department of Occupational Therapy,Yamagata Prefectural University of Health Sciences 5Department of Neurosurgery,Tohoku University Graduate School of Medicine Keyword: alexia , agraphia , left parietal , kanji and kana , kinesthetic route pp.991-996
Published Date 2010/9/1
DOI https://doi.org/10.11477/mf.1416100752
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Abstract

 A 69-year-old right-handed man developed alexia with agraphia after resection of a brain tumor in the left parietal lobe. After the operation, neurological examination revealed right lower quadrantanopia, mild paresis and sensory disturbance on the right side. He showed marked alexia with agraphia, very mild aphasia, acalculia, and constructional disability. In reading tasks, he was able to read kanji word and kana words but not a single kana character or nonword. After he traced a single kana character or kana nonword, he was able to read it. In writing tasks, he could write kana but not kanji characters, except simple kanji characters that involved less than 4 strokes.

 These findings indicated that kinesthetic traces may enable such patients to read and write. We propose that processes of reading and writing may include kinesthetic route in addition to the meaning, phonological, and orthographical routes.

(Received: April 16,2008,Accepted: April 12,2010)


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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