Reorganization of Cortical Language Areas in Patients with Aphasia: A Functional MRI Study
Yonsei Medical Journal
;
: 441-445, 2002.
Article
in English
| WPRIM
| ID: wpr-198780
ABSTRACT
The purpose of this study is to delineate the pattern of reorganization of cortical language areas using functional magnetic resonance imaging (fMRI) after rehabilitation therapy in patients with aphasia. Six right-handed aphasic patients were investigated. Causes of aphasia were intracerebral hemorrhages of the left basal ganglia in 3 patients, cerebral infarction of the left MCA in 2, and surgical resection of the frontotemporal lobes to control intractable epilepsy in 1. An auditory sentence completion task was used to activate brain language areas during the fMRI. Three patients with left frontal lesions showed activation in the right inferior frontal lobes while performing language tasks, whereas the other 3, whose lesions located at subcortical areas, showed activation in the bilateral frontal and temporal lobes. Our results demonstrated the differences in interhemispheric reorganization of the language network depending on the location of the lesion in aphasic patients. While the patients with subcortical lesion showed tendency of bilateral frontal activation, those with cortical lesion showed activation of the right frontal lobe.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Aphasia
/
Magnetic Resonance Imaging
/
Cerebral Cortex
/
Language
/
Middle Aged
Limits:
Adult
/
Female
/
Humans
/
Male
Language:
English
Journal:
Yonsei Medical Journal
Year:
2002
Type:
Article
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