Objective
To investigate whether the dual route model is applicable to Korean word reading in acquired dyslexia after stroke. Method: Sixty-two year old patient with dyslexia after left inferior temporal and occipital lobe infarct was evaluated according to the lexical processing. After evaluation of general cognitive and language function, visual perception, semantic, and lexical stages were assessed. Results: Visual perception was appropriate, and semantic categorization and picture-word matching tasks were 80.6% and 78.6% correct, respectively. Lexical decision task showed no significant differences within word classes, exceptshorter reaction time in reading words of Korean origin than those of chinese origin (p＜0.05). The patient was able to read only 39.8% of tested words, and he could not read all the non-words. Reading of high frequency word was superior (65.4%) to that of low frequency words (10.9%) and semantic errors were not remarkable (p＜0.05). Conclusion: The patient showed characteristics of recovery from deep to phonologic dyslexia with impairment of grapheme to phoneme conversion (GPC) route. These findings support that dual route model is applicable to Korean word reading. (J Korean Acad Rehab Med 2005; 29: 23-31)
