Sign language aphasia due to left occipital lesion in a deaf signer.
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.
Saito
Kozue
K
Department of Neurology, Nara Medical University, Nara, Japan. ksaito@naramed-u.ac.jp
Otsuki
Mika
M
Ueno
Satoshi
S
D000222:Adaptation, Physiological; D000368:Aged; D001041:Aphasia, Wernicke / Q000209:etiology / Q000473:pathology / Q000503:physiopathology*; D002544:Cerebral Infarction / Q000150:complications / Q000473:pathology / Q000503:physiopathology*; D003638:Deafness / Q000503:physiopathology*; D007839:Functional Laterality; D006801:Humans; D007564:Japan; D007807:Language Tests; D008279:Magnetic Resonance Imaging; D008297:Male; D009473:Neuronal Plasticity; D009483:Neuropsychological Tests; D010364:Pattern Recognition, Visual; D012813:Sign Language; D014793:Visual Cortex / Q000473:pathology / Q000503:physiopathology*; D014795:Visual Pathways / Q000473:pathology / Q000503:physiopathology