Optic Aphasia: A Case Study.
- Author:
Miseon KWON
1
;
Jae Hong LEE
Author Information
- Publication Type:Case Report
- Keywords: Optic aphasia; Visual agnosia; Dyslexia
- MeSH: Aged; Agnosia; Anomia; Aphasia*; Dyslexia; Humans; Infarction; Posterior Cerebral Artery; Semantics
- From:Journal of Clinical Neurology 2006;2(4):258-261
- CountryRepublic of Korea
- Language:English
- Abstract: Optic aphasia is a rare syndrome in which patients are unable to name visually presented objects but have no difficulty in naming those objects on tactile or verbal presentation. We report a 79-year-old man who exhibited anomic aphasia after a left posterior cerebral artery territory infarction. His naming ability was intact on tactile and verbal semantic presentation. The results of the systematic assessment of visual processing of objects and letters indicated that he had optic aphasia with mixed features of visual associative agnosia. Interestingly, although he had difficulty reading Hanja (an ideogram), he could point to Hanja letters on verbal description of their meaning, suggesting that the processes of recognizing objects and Hanja share a common mechanism.
