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

Yun Hee Kim*, Myoung Hwan Ko, Todd B. Parrish, Hyun Gi Kim

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

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 epilepys in 1. An auditory sentence completion task was used to active 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.

Original languageEnglish (US)
Pages (from-to)441-445
Number of pages5
JournalYonsei medical journal
Volume43
Issue number4
DOIs
StatePublished - Aug 2002

Keywords

  • Aphasia
  • Functional MRI
  • Language area
  • Reorganization

ASJC Scopus subject areas

  • Medicine(all)

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