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[Vol.21 No.2 contents]
Japanese/English
Full Text of this Articlein Japanese PDF (85K) |
| ArticleTitle | A case of agrammatism following right hemisphere lesion: Investigation of lexical and syntax production task |
| Language | J |
| AuthorList | Shinya Fukunaga1), Fumitada Hattori2), Koichi Tagawa3), Koichi Hirata4) |
| Affiliation |
1) Department of Speech Therapy, Nagao Hospital·Department of Neurology, Dokkyo University School of Medicine 2) Department of Internal Medicine, Nagao Hospital 3) Department of Higher Brain Function Disorders Center of Fukuoka, Hara-doi Hospital 4) Department of Neurology, Dokkyo University School of Medicine |
| Publication | Japanese Journal of Neuropsychology: 21 (2), 132-138, 2005 |
| Received | Jul 15, 2004 |
| Accepted | Nov 1, 2004 |
| Abstract | We described a case of unilateral spatial neglect and agrammatism caused by right hemisphere lesion. The patient was a 66-year-old male, right-handed with a family history of left-handedness. On syntax test of production, omission of function words was prominent in oral output, although the semantic aspect of production of nouns and verbs was preserved. Writing ability was mildly impaired. Most of errors were prominent omitted function words in oral output except in repetition. The omission of function words in addition to nominalization of verbs and substitution was observed in writing output. Agrammatism was caused by extensive right hemisphere lesion in this patient, right-handed with a family history of left-handedness. This point suggested anomalous lateralization of language in our case. We suppose that the mechanism of agrammatism in extensive right hemisphere lesion might dissociate impaired grammatical function in right hemisphere based on preservation of phonological and lexical function in left hemisphere. Dissociation was observed between writing and oral output, deficits of the former being milder than that of the latter. We suggested that his telegram speech would be a feature of the right hemisphere syndrome. |
| Keywords | agrammatism, lateralization of language, grammatical function, phonological function, lexical function |
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