Open AccessNeural connectivity in Internet gaming disorder and alcohol use disorder: A resting-state EEG coherence study
Author(s) -
Su Mi Park,
Ji Yoon Lee,
Yeon Jin Kim,
Jun Young Lee,
Hee Yeon Jung,
Bo Kyung Sohn,
Daijin Kim,
Jung Seok Choi
Publication year - 2017
Publication title -
scientific reports
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.24
H-Index - 213
ISSN - 2045-2322
DOI - 10.1038/s41598-017-01419-7
Subject(s) - impulsivity , electroencephalography , resting state fmri , addiction , psychology , anxiety , audiology , immunoglobulin d , neurophysiology , neural correlates of consciousness , neuroscience , coherence (philosophical gambling strategy) , alcohol use disorder , psychiatry , medicine , alcohol , cognition , biology , physics , biochemistry , b cell , quantum mechanics , antibody , immunology
The present study compared neural connectivity and the level of phasic synchronization between neural populations in patients with Internet gaming disorder (IGD), patients with alcohol use disorder (AUD), and healthy controls (HCs) using resting-state electroencephalography (EEG) coherence analyses. For this study, 92 adult males were categorized into three groups: IGD (n = 30), AUD (n = 30), and HC (n = 32). The IGD group exhibited increased intrahemispheric gamma (30–40 Hz) coherence compared to the AUD and HC groups regardless of psychological features (e.g., depression, anxiety, and impulsivity) and right fronto-central gamma coherence positively predicted the scores of the Internet addiction test in all groups. In contrast, the AUD group showed marginal tendency of increased intrahemispheric theta (4–8 Hz) coherence relative to the HC group and this was dependent on the psychological features. The present findings indicate that patients with IGD and AUD exhibit different neurophysiological patterns of brain connectivity and that an increase in the fast phasic synchrony of gamma coherence might be a core neurophysiological feature of IGD.