Females are more vulnerable to Internet gaming disorder than males: Evidence from cortical thickness abnormalities

Wang, Ziliang, Hu, Yanbo, Zheng, Hui, Yuan, Kai, Du, Xiaoxia and Dong, Guangheng (2019) Females are more vulnerable to Internet gaming disorder than males: Evidence from cortical thickness abnormalities. Psychiatry research. Neuroimaging. ISSN 0925-4927 (In Press)

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Abstract / Description

Male predominance is a well-known feature of Internet gaming disorder (IGD), with a reported male to female ratio of 3:1. Because of the overwhelming focus on males, little is known about the neural basis of sex differences in IGD, especially neuroanatomical features. Thus, investigations on sex differences with an adequate sample size are critical for improving the understanding of biological mechanisms underlying IGD. Structural magnetic resonance imaging data were acquired from 62 IGD subjects (29 males, 33 females) and 71 recreational game users (RGUs) (37 males, 34 females) with well-matched age and education levels. Group-by-sex interaction in cortical thickness was analyzed, and the correlations between cortical thickness and addiction severity were calculated. We detected a group-by-sex interaction in the bilateral rostral middle frontal gyri (MFG), left superior frontal gyrus (SFG), left supramarginal gyrus (SMG), right posterior cingulate cortex (PCC), and right superior parietal lobule (SPL). Post-hoc analyses revealed that, compared with same-sex RGUs, male IGD subjects had increased cortical thickness and female IGD subjects had reduced cortical thickness beside their right PCC. By contrast, male IGD subjects had reduced cortical thickness and female IGD subjects had increased cortical thickness in their right PCC. Moreover, only females showed significant negative correlations between the cortical thickness and their self-reported cravings and Internet addiction test scores. For female IGD subjects, the reduced cortical thickness, combined with the negative correlations of addiction severities, suggests the great effect created by IGD in the brain regions. Males and females may be affected differently by IGD, with females being more vulnerable to it. [Abstract copyright: Copyright © 2018. Published by Elsevier B.V.]

Item Type: Article
Additional Information: ** From PubMed via Jisc Publications Router.
Uncontrolled Keywords: Cortical thickness, Internet gaming disorder, Sex difference
Subjects: 100 Philosophy & psychology > 150 Psychology
500 Natural Sciences and Mathematics > 570 Life sciences; biology
Department: School of Social Sciences
SWORD Depositor: Pub Router
Depositing User: Pub Router
Date Deposited: 14 Dec 2018 10:42
Last Modified: 14 Dec 2018 10:42
URI: http://repository.londonmet.ac.uk/id/eprint/4037

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