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The Differences of Visuospatial Cognitive Performance and Cerebral Activation and Lateralization between 20s and 40s  

Chung Soon Cheol (건국대학교 의학공학부)
Kim Yun Sung (건국대학교 의학공학부)
You Ji Hye (건국대학교 의학공학부)
Tack Gye Rae (건국대학교 의학공학부)
Lee Bongsoo (건국대학교 의학공학부)
Yi Jeong Han (건국대학교 의학공학부)
Sohn Jin Hun (충남대학교 심리학과)
Publication Information
Journal of the Korean Society for Precision Engineering / v.23, no.1, 2006 , pp. 209-215 More about this Journal
Abstract
The present study purposed to examine differences between 20s and 40s in visuospatial performance, the number of activated yokels and cerebral lateralization using functional Magnetic Resonance Imaging (fMRI). For this study, eight college students in their twenties (21.5 years on the average) and six adults in their forties (45.7 years on the average) participated in the experiment. Functional brain images were taken from 37 MRI using the single-shot EPI method. Compared to the twenties the forties showed lower visuospatial performance and longer reaction time. In addition, compared to the twenties the forties had a smaller number of activated yokels and less cerebral lateralization. The results of this study show that people's visuospatial performance and number of activated yokels decrease with aging. In addition, they also suggest that cerebral lateralization decreases in order to supplement the lowering of visuospatial performance, which in turn symmetrizes the activation of the left and right hemisphere.
Keywords
20s and 40s; visuospatial cognitive performance; cerebral activation and lateralization;
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