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Cortical Structure Alterations in Young People With Mild Internet Gaming Disorder.

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  • 1Department of Magnetic Resonance Imaging, the First Affiliated Hospital of Zhengzhou University, Zhengzhou, China.

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Young individuals with early Internet gaming disorder (IGD) show cortical thickening and reduced complexity, suggesting a compensatory brain adaptation. This pattern offers insights for early detection and intervention strategies in gaming disorder.

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Area of Science:

  • Neuroscience
  • Neuroimaging
  • Psychiatry

Background:

  • Internet gaming disorder (IGD) is a growing concern, particularly among adolescents.
  • Understanding the neurobiological underpinnings of early-stage IGD is crucial for timely intervention.
  • Previous research has explored structural brain changes in IGD, but early-stage alterations require further investigation.

Purpose of the Study:

  • To investigate cortical structure alterations in young individuals with early Internet gaming disorder (IGD).
  • To identify potential neuroimaging biomarkers for early detection and intervention in IGD.
  • To explore the relationship between structural brain changes and clinical characteristics in IGD.

Main Methods:

  • Structural magnetic resonance imaging (sMRI) data were acquired from 64 individuals with IGD and 47 healthy controls (HCs).
  • Analyses included comparisons of grey matter volume (GMV), cortical thickness, and cortical complexity between groups.
  • Correlations between brain regions with structural changes and clinical features in IGD patients were examined.

Main Results:

  • No significant differences in grey matter volume (GMV) were found between the IGD and HC groups.
  • The IGD group exhibited right-hemisphere dominant cortical thickening in default mode, dorsal attention, and visual networks.
  • Reduced cortical complexity was observed in prefrontal and occipito-parietal areas in the IGD group.
  • A unique thickening-complexity decoupling pattern was identified in adolescents with mild IGD.

Conclusions:

  • Adolescents with mild IGD show a distinct pattern of cortical thickening and reduced complexity, suggesting a compensatory neuroadaptation.
  • This thickening-complexity decoupling pattern, with stable GMV, may indicate an adaptive resource reallocation phase in early IGD.
  • These findings highlight a critical window for early intervention and identify potential neural targets for therapeutic strategies in IGD.