To identify neuroimaging-defined subtypes associated with the risk of developing internet gaming disorder (IGD) and their relationship with impulsivity, emphasizing the predictive nature of these subtypes.
Key Findings:
Higher-risk subtype had a 2-year IGD conversion rate of 24% compared to 7% in the lower-risk subtype, indicating significant predictive value.
Key differences in brain connectivity included reduced orbitofrontal connectivity and increased occipital connectivity in the higher-risk group, linking these patterns to impulsivity.
Baseline impulsivity, particularly cognitive and nonplanning, was greater in the higher-risk group, suggesting a direct relationship with IGD severity.
Interpretation:
Impulsivity-linked brain connectivity patterns may facilitate early identification of individuals at risk for IGD, suggesting potential for early intervention.
Limitations:
Modest longitudinal sample sizes may limit generalizability.
Only two assessment time points restrict the understanding of IGD progression.
Lack of detailed gaming behavior data may overlook important factors.
No sex-specific analysis could mask potential differences in risk.
Conclusion:
Findings indicate that orbitofrontal–occipital connectivity imbalance may serve as a candidate marker for early IGD identification and intervention, pending further validation to confirm clinical applicability.
