KMID : 0359720230410030210
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Journal of the Korean Neurological Association 2023 Volume.41 No. 3 p.210 ~ p.215
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Lexical-semantic Deficit without Semantic Impairment in a Patient with Left Anterior Choroidal Artery Infarction: Neural Correlates Based on Diffusion-tensor Tractography
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Na Han-Kyu
Sun Ye-Eun Joe Sang-Won Lee Chung-Seok Kim Seok-Hyun Choi Yun-Jung Joo Ha-Ram KIm Deog-Young Nam Hyo-Suk
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Abstract
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A 35-year-old male presented with atypical aphasia following left anterior choroidal artery infarction associated with distal internal carotid artery dissection. He presented with 1) lexical-semantic deficit without semantic impairment, 2) frequent surface errors (both surface dyslexia and dysgraphia), and 3) intact non-word reading/repetition (preserved sub-lexical route), suggesting deficit in the phonological output lexicon. Diffusion-tensor tractography analysis revealed disruption in the inferior fronto-occipital fasciculus and inferior longitudinal fasciculus, which might serve as potential subcortical neural correlates for phonological output lexicon.
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KEYWORD
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Anomia, Cerebral infarction, Diffusion tensor imaging
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