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작성일 : 14-06-13 15:47
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                                         Psychiatry Investigation 지에 실렸습니다. 



Psychiatry Investigation

Volume 10. Number 4.
 Pages 388-92 (2013) 
 



 
Increased Cortical Thickness in Professional On-Line Gamers

Gi Jung Hyun1;Yong Wook Shin2;Bung-Nyun Kim3;Jae Hoon Cheong4;Seong Nam Jin1; and Doug Hyun Han1;
1;Department of Psychiatry, Chung Ang University Hospital, Seoul, 
2;Department of Psychiatry, ASAN Medical Center, University of Ulsan College of Medicine, Seoul, 
3;Department of Psychiatry, Seoul National University College of Medicine, Seoul, 
4;Uimyung Research Institute for Neurosciecne, Samyook University, Seoul, Republic of Korea


Objective : The bulk of recent studies have tested whether video games change the brain in terms of activity and cortical volume. However, such studies are limited by several factors including cross-sectional comparisons, co-morbidity, and short-term follow-up periods. In the present study, we hypothesized that cognitive flexibility and the volume of brain cortex would be correlated with the career length of on-line pro-gamers.

Methods : High-resolution magnetic resonance scans were acquired in twenty-three pro-gamers recruited from StarCraft pro-game teams. We measured cortical thickness in each individual using FreeSurfer and the cortical thickness was correlated with the career length and the performance of the pro-gamers.

Results : Career length was positively correlated with cortical thickness in three brain regions: right superior frontal gyrus, right superior parietal gyrus, and right precentral gyrus. Additionally, increased cortical thickness in the prefrontal cortex was correlated with winning rates of the pro-game league. Increased cortical thickness in the prefrontal and parietal cortices was also associated with higher performance of Wisconsin Card Sorting Test.

Conclusion : Our results suggest that in individuals without pathologic conditions, regular, long-term playing of on-line games is associated with volume changes in the prefrontal and parietal cortices, which are associated with cognitive flexibility.

Key Words
On-line game;Cortical thickness;Frontal cortex;Cognitive flexibility.