Reorganization of cortical language areas in patients with aphasia: A functional MRI study

被引:21
作者
Kim, YH
Ko, MH
Parrish, TB
Kim, HG
机构
[1] Pochon CHA Univ, Bundang CHA Gen Hosp, Coll Med, Dept Phys Med & Rehabil, Sungnam 463712, Kyonggi, South Korea
[2] Chonbuk Natl Univ Coll Med, Res Inst Clin Med, Dept Rehabil Med, Chonju, South Korea
[3] Northwestern Univ, Sch Med, Dept Radiol,Feinberg Neurosci Inst, Cognit Neurol & Alzheimers Dis Ctr, Chicago, IL 60611 USA
[4] Chonbuk Natl Univ Coll Humanities, Res Inst Speech Sci, Dept Language & Literature France, Chonju, South Korea
关键词
aphasia; language area; reorganization; functional MRI;
D O I
10.3349/ymj.2002.43.4.441
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
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.
引用
收藏
页码:441 / 445
页数:5
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