Key result
Alcohol use disorder links to lower EEG microstate C occurrence and coverage versus internet gaming disorder.
Why the study?
To investigate the neurophysiological aspects of addiction by comparing resting-state electroencephalography microstate characteristics among individuals with internet gaming disorder, alcohol use disorder, and healthy controls.
Are there differences in resting-state EEG microstate characteristics among young adults with internet gaming disorder, alcohol use disorder, and healthy controls?
Cross-Sectional (n=199)
Are there differences in resting-state EEG microstate characteristics among young adults with internet gaming disorder, alcohol use disorder, and healthy controls?
Resting-state EEG microstate features differ significantly between internet gaming disorder and alcohol use disorder, suggesting potential utility as neuromarkers for addictive disorders.
Microstate differences in IGD and AUD may reflect distinct neurophysiology; leaves open whether parameters aid clinical differentiation or treatment.
INTRODUCTION: To investigate the neurophysiological aspects of addiction, the microstate characteristics of internet gaming disorder (IGD), alcohol use disorder (AUD), and healthy control (HC) groups were compared using resting-state electroencephalography (EEG). METHODS: In total, 199 young adults (75 patients with IGD, 57 patients with AUD, and 67 HCs) participated in this study. We conducted EEG microstate analysis among the groups and also compared the obtained parameters with the results of psychological assessments. RESULTS: The global explained variance, occurrence, and coverage of microstate C were significantly lower in the AUD group than in the IGD group. Additionally, rates of transition from microstates A, B, and D to C were significantly lower in the AUD group than in the IGD group, whereas rates of transition from microstate A to B were lower in the IGD group compared to HCs. Furthermore, the occurrence of microstate C and transition from microstate B to C were negatively correlated with the Alcohol Use Disorder Identification and Behavioural Inhibition Scale score. CONCLUSION: There were significant differences in microstate characteristics among the groups, which correlated with the psychological scores. These findings suggest that microstate features can be used as neuromarkers in clinical settings to differentiate between addictive disorders and evaluate the pathophysiology of AUD and IGD.
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Kim et al. (2024) conducted a cross-sectional in Internet gaming disorder and alcohol use disorder (n=199). Internet gaming disorder and alcohol use disorder vs. Healthy controls was evaluated on EEG microstate characteristics (global explained variance, occurrence, coverage, and transition rates). Alcohol use disorder was associated with significantly lower global explained variance, occurrence, and coverage of EEG microstate C compared to internet gaming disorder.
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