Abstract
Localization of sign language production and comprehension in deaf people has been described as similar to that of spoken language aphasia. However, sign language employs a visuospatial modality through visual information. We present the first report of a deaf signer who showed substantial sign language aphasia with severe impairment in word production due to a left occipital lesion. This case may indicate the possibility of other localizations of plasticity.
MeSH terms
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Adaptation, Physiological
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Aged
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Aphasia, Wernicke / etiology
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Aphasia, Wernicke / pathology
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Aphasia, Wernicke / physiopathology*
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Cerebral Infarction / complications
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Cerebral Infarction / pathology
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Cerebral Infarction / physiopathology*
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Deafness / physiopathology*
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Functional Laterality*
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Humans
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Japan
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Language Tests
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Magnetic Resonance Imaging
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Male
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Neuronal Plasticity
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Neuropsychological Tests
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Pattern Recognition, Visual
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Sign Language*
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Visual Cortex / pathology
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Visual Cortex / physiopathology*
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Visual Pathways / pathology
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Visual Pathways / physiopathology