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Functional MR Imaging of Language System : Comparative Study between Visual and Auditory Instructions in Word Generation Task  

구은회 (서울대학교병원 진단방사선과)
권대철 (서울대학교병원 진단방사선과)
김동성 (서울대학교병원 진단방사선과)
송인찬 (서울대학교 의과대학 방사선학교실)
Publication Information
Journal of Biomedical Engineering Research / v.24, no.4, 2003 , pp. 241-246 More about this Journal
Abstract
To evaluate the usefulness if functional MR imaging(MRI) for the determination of language dominance system and to assess differences in the visual and auditory instrument language generation task according to activation task or activated area. Functional maps of the language area were obtained during visual and auditory instructions in word generation tasks in 6 healthy volunteer with right-handness were examined on a 1.5T scanner and the EPI BOLD technique, and three pulse sequence technique get of the true axial planes. Both task consisted of 96 phases including 6 activations and rests contents. Postprocessing were done on MRDx program by using cross correlation method. Two task compare the blain activation area surveyed of 1anguage lateralization index. To evaluated of the detection rates of Broca. Wernicke, pre-frontal lobe, Supplementary Motor Area (SMA) and pre-motor cortex areas and the differences of language lateraliaztion among two word generation task To lateralization index survey in 1anguage area on right and left in brain get to activation area pixel in brain. Compared to visual and auditory instrument task in the language areas get to the lateralization index. Two language generation task high detection rates of Broca and Wernicke areas. The visual instruction no detected in the auditory area, and auditory instruction no detected in the visual area. There was statistics significant different of them among language generation task. 1'his indicated that language area obtained image of the brain functional MR imaging usefulness in the visual and auditory task instrument.
Keywords
fMRI; Brain; Visual; Auditory; Language; Instrument;
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