Imbalanced functional link between executive control network and reward network explain the online-game seeking behaviors in Internet gaming disorder

Literatures have shown that Internet gaming disorder (IGD) subjects show impaired executive control and enhanced reward sensitivities than healthy controls. However, how these two networks jointly affect the valuation process and drive IGD subjects' online-game-seeking behaviors remains unknown...

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Bibliographic Details
Published in:Scientific reports 2015-03, Vol.5 (1), p.9197-9197, Article 9197
Main Authors: Dong, Guangheng, Lin, Xiao, Hu, Yanbo, Xie, Chunming, Du, Xiaoxia
Format: Article
Language:English
Subjects:
59/36
59/57
631/378/1788
631/378/2649
631/378/2649/1662
Addictions
Adult
Behavior, Addictive
Brain - physiopathology
Brain Mapping
Case-Control Studies
Executive Function
Functional magnetic resonance imaging
Humanities and Social Sciences
Humans
Immunoglobulin D
Information processing
Internet
Investigations
Magnetic Resonance Imaging
Male
Mental Disorders
multidisciplinary
Neural networks
Neurosciences
Nucleus accumbens
Play and Playthings - psychology
Reinforcement
Science
Seeds
Valuation
Young Adult
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Summary:Literatures have shown that Internet gaming disorder (IGD) subjects show impaired executive control and enhanced reward sensitivities than healthy controls. However, how these two networks jointly affect the valuation process and drive IGD subjects' online-game-seeking behaviors remains unknown. Thirty-five IGD and 36 healthy controls underwent a resting-states scan in the MRI scanner. Functional connectivity (FC) was examined within control and reward network seeds regions, respectively. Nucleus accumbens (NAcc) was selected as the node to find the interactions between these two networks. IGD subjects show decreased FC in the executive control network and increased FC in the reward network when comparing with the healthy controls. When examining the correlations between the NAcc and the executive control/reward networks, the link between the NAcc - executive control network is negatively related with the link between NAcc - reward network. The changes (decrease/increase) in IGD subjects' brain synchrony in control/reward networks suggest the inefficient/overly processing within neural circuitry underlying these processes. The inverse proportion between control network and reward network in IGD suggest that impairments in executive control lead to inefficient inhibition of enhanced cravings to excessive online game playing. This might shed light on the mechanistic understanding of IGD.
ISSN:2045-2322
2045-2322
DOI:10.1038/srep09197