Double dissociation of Hangul and Hanja reading in Korean patients with stroke.
The orthographic system of the Korean language consists of both phonogram (Hangul) and ideogram (Hanja). We report 2 patients who revealed selective impairment in reading either of orthographies after the brain damages. YJ, a 67-year-old man, showed Broca's aphasia and severe apraxia of speech after a stroke in the left inferior parietal lobe. He demonstrated predominant difficulties in reading phonogram. KS, a 51-year-old woman, had an intracerebral hemorrhage in the left parietal lobe. She showed anomic aphasia and a selective impairment on reading ideogram. These findings support the notion that recognition of visual words is processed in different ways depending on the characteristics of orthographic systems.
Kwon
Miseon
M
Department of Neurology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, 138-736, Republic of Korea. mskwon@amc.seoul.kr
Kim
Jong S
JS
Lee
Jae-Hong
JH
Sim
Hyeonsub
H
Nam
Kichun
K
Park
Heasuk
H
D000368:Aged; D004213:Dissociative Disorders / Q000473:pathology / Q000503:physiopathology*; D005260:Female; D006801:Humans; D007723:Korea; D008279:Magnetic Resonance Imaging / Q000379:methods; D008297:Male; D008875:Middle Aged; D010700:Phonetics; D011932:Reading; D012660:Semantics; D020521:Stroke / Q000473:pathology / Q000503:physiopathology*