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Temporal variability-based alternations in dynamic functional networks in internet gaming disorder.

Jiejie Fu1, Shuaiyu Chen2, Min Wang3

  • 1Department of Psychology, Yunnan Normal University, Kunming, Yunnan Province, China; Center for Cognition and Brain Disorders, The Affiliated Hospital of Hangzhou Normal University, Hangzhou, Zhejiang Province, China.

Journal of Psychiatric Research
|May 7, 2025
PubMed
Summary

Individuals with internet gaming disorder (IGD) show altered brain network dynamics, with decreased default mode network variability and increased sensorimotor and attention network variability compared to healthy controls. These changes suggest impaired executive functions and attention.

Keywords:
Default mode networkInternet gaming disorderLimbic networkSensorimotor networkTemporal variabilityVentral attention network

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Brain Imaging

Background:

  • Previous research on internet gaming disorder (IGD) often assumed static brain connectivity, overlooking dynamic network changes.
  • Understanding dynamic functional network reorganization is vital for a comprehensive view of IGD.

Purpose of the Study:

  • To investigate dynamic functional connectivity (FC) alterations in the brain networks of individuals with IGD.
  • To compare temporal variability in brain networks between IGD patients and recreational game users (RGUs).

Main Methods:

  • Resting-state fMRI data analyzed from 269 participants (132 IGD, 137 RGUs).
  • Calculated temporal variability indices at within-network and between-network levels.
  • Utilized independent samples t-tests for group comparisons.

Main Results:

  • IGD subjects showed decreased within-network temporal variability in the default mode network (DMN).
  • Increased within-network temporal variability observed in the ventral attention network (VAN) for IGD.
  • Elevated between-network temporal variability noted in sensorimotor (SMN), VAN, and limbic networks (LN) in IGD.

Conclusions:

  • Altered temporal variability in brain networks is a key feature of IGD.
  • Findings suggest impaired executive inhibitory control, attention, and imbalances in sensory-emotion-motivation functions in IGD.
  • These insights enhance understanding of the neural underpinnings of pathological gaming behaviors.