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Abnormal gray matter volume and impulsivity in young adults with Internet gaming disorder

Authors
 Deokjong Lee  ;  Kee Namkoong  ;  Junghan Lee  ;  Young‐Chul Jung 
Citation
 Addiction Biology, Vol.23(5) : 1160-1167, 2018 
Journal Title
 Addiction Biology 
ISSN
 1355-6215 
Issue Date
2018
Keywords
Internet gaming disorder ; impulsivity ; voxel-based morphometry
Abstract
Reduced executive control is one of the central components of model on the development and maintenance of Internet gaming disorder (IGD). Among the various executive control problems, high impulsivity has consistently been associated with IGD. We performed voxel-based morphometric analysis with diffeomorphic anatomical registration by using an exponentiated Lie algebra algorithm (DARTEL) to investigate the relationship of gray matter abnormalities to impulsivity in IGD. Thirty-one young male adults whose excessive Internet gaming began in early adolescence, and 30 age-matched male healthy controls were examined. IGD subjects showed smaller gray matter volume (GMV) in brain regions implicated in executive control, such as the anterior cingulate cortex and the supplementary motor area. The GMVs in the anterior cingulate cortex and the supplementary motor area were negatively correlated with self-reporting scales of impulsiveness. IGD subjects also exhibited smaller GMV in lateral prefrontal and parietal cortices comprising the left ventrolateral prefrontal cortex and the left inferior parietal lobule when compared with healthy controls. The GMVs in the left ventrolateral prefrontal cortex were negatively correlated with lifetime usage of Internet gaming. These findings suggest that gray matter abnormalities in areas related to executive control may contribute to high impulsivity of young adults with IGD. Furthermore, alterations in the prefrontal cortex were related with long-term excessive Internet gaming during adolescence.
Full Text
https://onlinelibrary.wiley.com/doi/full/10.1111/adb.12552
DOI
10.1111/adb.12552
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Psychiatry (정신과학교실) > 1. Journal Papers
Yonsei Authors
Namkoong, Kee(남궁기) ORCID logo https://orcid.org/0000-0003-1400-8057
Jung, Young Chul(정영철) ORCID logo https://orcid.org/0000-0002-0578-2510
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/165094
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