He Jinbo, Zheng Yang, Fan Liyan, Pan Ting, Nie Yufeng
Key Laboratory of Adolescent Cyberpsychology and Behavior of Ministry of Education, Key Laboratory of Human Development and Mental Health of Hubei Province, School of Psychology, Central China Normal University, Wuhan, China.
Front Psychiatry. 2019 Nov 8;10:824. doi: 10.3389/fpsyt.2019.00824. eCollection 2019.
Individuals with Internet gaming disorder (IGD) show deficits in face processing due to long-term Internet-game social activities based on cartoon faces in the popular online game "Strike of Kings." However, the abnormal neurocognitive mechanism of face recognition and processing in individuals with IGD has not been systematically explored. This study used event-related potential (ERP) methods and the reversed deviant-standard oddball paradigm to comprehensively compare four ERP components, namely, P100, N170, P200, and mismatch negativity (MMN), induced in the unconscious and automatic processing of realistic and cartoon faces in individuals with IGD. Results showed that, with respect to cartoon faces, individuals with IGD exhibited not only P100, P200 and MMN enhancements but also the absence of the N170 dominance effect in the left hemisphere. Our results also demonstrated that individuals with IGD had the advantages of early automatic perception of cartoon faces and automatic detection of changes in "cartoon" features. This study enhances our understanding of the mechanism of IGD from the neurocognitive perspective and provides candidate electrophysiological indicators for the clinical diagnosis of IGD.
患有网络游戏障碍（IGD）的个体由于长期参与热门网络游戏《王者荣耀》中基于卡通面孔的网络游戏社交活动，在面部处理方面存在缺陷。然而，IGD患者面部识别和处理的异常神经认知机制尚未得到系统探索。本研究采用事件相关电位（ERP）方法和反向偏差-标准奇偶数范式，全面比较了IGD患者在无意识和自动处理真实面孔和卡通面孔时诱发的四个ERP成分，即P100、N170、P200和失配负波（MMN）。结果表明，对于卡通面孔，IGD患者不仅表现出P100、P200和MMN增强，而且左半球不存在N170优势效应。我们的结果还表明，IGD患者在早期自动感知卡通面孔和自动检测“卡通”特征变化方面具有优势。本研究从神经认知角度增强了我们对IGD机制的理解，并为IGD的临床诊断提供了候选电生理指标。
