2.Lexical-semantic Deficit without Semantic Impairment in a Patient with Left Anterior Choroidal Artery Infarction: Neural Correlates Based on Diffusion-tensor Tractography
Han Kyu NA ; Yeeun SUN ; Sangwon JOE ; Chung Seok LEE ; Seokhyun KIM ; Yunjung CHOI ; Haram JOO ; Deog Young KIM ; Hyo Suk NAM
Journal of the Korean Neurological Association 2023;41(3):210-215
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.