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Dysfunctional default mode network and executive control network in people with Internet gaming disorder: Independent component analysis under a probability discounting task

Published online by Cambridge University Press:  23 March 2020

L Wang ,
L Wu ,
X Lin ,
Y Zhang ,
H Zhou ,
X Du  and
G Dong
L Wang
Affiliation:
Department of Psychology, Zhejiang Normal University, 688 Yingbin Road JinhuaZhejiang Province321004, PRChina
L Wu
Affiliation:
Department of Psychology, University of Konstanz, Konstanz, Germany
X Lin
Affiliation:
Department of Psychology, Zhejiang Normal University, 688 Yingbin Road JinhuaZhejiang Province321004, PRChina Center for Life Science, Peking University, Beijing, PRChina
Y Zhang
Affiliation:
Department of Psychology, Zhejiang Normal University, 688 Yingbin Road JinhuaZhejiang Province321004, PRChina
H Zhou
Affiliation:
Department of Psychology, Zhejiang Normal University, 688 Yingbin Road JinhuaZhejiang Province321004, PRChina
X Du
Affiliation:
Department of Physics, Shanghai Key Laboratory of Magnetic Resonance, East China Normal University, Shanghai, PRChina
G Dong*
Affiliation:
Department of Psychology, Zhejiang Normal University, 688 Yingbin Road JinhuaZhejiang Province321004, PRChina
*
*Corresponding author. E-mail address:dongguangheng@zjnu.edu.cn (G. Dong).
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Abstract

Background

The present study identified the neural mechanism of risky decision-making in Internet gaming disorder (IGD) under a probability discounting task.

Methods

Independent component analysis was used on the functional magnetic resonance imaging data from 19 IGD subjects (22.2 ± 3.08 years) and 21 healthy controls (HC, 22.8 ± 3.5 years).

Results

For the behavioral results, IGD subjects prefer the risky to the fixed options and showed shorter reaction time compared to HC. For the imaging results, the IGD subjects showed higher task-related activity in default mode network (DMN) and less engagement in the executive control network (ECN) than HC when making the risky decisions. Also, we found the activities of DMN correlate negatively with the reaction time and the ECN correlate positively with the probability discounting rates.

Conclusions

The results suggest that people with IGD show altered modulation in DMN and deficit in executive control function, which might be the reason for why the IGD subjects continue to play online games despite the potential negative consequences.

Keywords

Executive control networkDefault mode networkIndependent component analysisInternet gaming disorderRisky decision-making
Type
Original article
Information
European Psychiatry , Volume 34 , April 2016 , pp. 36 - 42
Copyright
Copyright © European Psychiatry 2016

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