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Correlation between Cognitive Performance Ability, Neural Activation Area and Neural Activation Intensity in fMRI  

Sohn Jin Hun (충남대학교 심리학과)
Oh Chong Hyun (건국대학교 의학공학부)
Tack Gye Rae (건국대학교 의학공학부)
Yi Jeong Han (건국대학교 의학공학부)
Lee Soo Yeol (경희대학교 동서의학대학원)
Chung Soon Cheol (건국대학교 의학공학부)
Publication Information
Journal of the Korean Society for Precision Engineering / v.22, no.7, 2005 , pp. 200-207 More about this Journal
Abstract
This study compares two different methods of measuring brain-BOLD activation. By comparing two different methods of measurement i.e., one method calculating the neural activation area (the number of activated voxels), while the other measured the neural activation intensity (the mean intensity of selected activated yokels), this study identified the more precise method of measuring brain activation which results from the completion of a visuospatial task. 16 right-handed male college students (mean age 23.2 years) participated in this study as subjects. Functional brain images were scanned on them using a 3T MRI single-shot EPI method. No correlation was found between the levels of cognitive performance and number of activated yokels in the activated brain areas. However, a significant correlation was found between the levels of cognitive performance and the mean intensity of selected activated yokels in the parietal, frontal, and other areas. In conclusion, the method of mean intensity was considered a better index of brain activity rather than the activated yokels measurement method.
Keywords
Cognitive performance ability; neural activation area; neural activation intensity; fMRI;
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