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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

  • L Wang (a1), L Wu (a2), X Lin (a1) (a3), Y Zhang (a1), H Zhou (a1), X Du (a4) and G Dong (a1)...

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.

Copyright

Corresponding author

*Corresponding author. E-mail address:dongguangheng@zjnu.edu.cn (G. Dong).

References

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Keywords

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

  • L Wang (a1), L Wu (a2), X Lin (a1) (a3), Y Zhang (a1), H Zhou (a1), X Du (a4) and G Dong (a1)...

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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

  • L Wang (a1), L Wu (a2), X Lin (a1) (a3), Y Zhang (a1), H Zhou (a1), X Du (a4) and G Dong (a1)...
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