病理性网络使用者反应监控功能的错误相关负波电位研究

摘要

Objective To investigate response monitoring function in individuals with pathological internet use(PIU) using the modified Eriksen flanker task by event-related potentials(ERPs).Methods 23 individuals met Young's diagnostic questionnaire (YDQ) criteria for PIU were enrolled as research group and 23 sexual-and age matched healthy persons enrolled as control group.EEG was recorded during participants performed the modified Erikson flanker task.Reactive time (RT) and error rates were compared between two groups. BESA 5.2.0was used to perform data analysis and the error-related negativity (ERN) amnplitudes were analyzed.Results False alarm rate of PIU group was higher than that of control group.A repeated measure ANOVA revealed a significant group,frontal electrode sites and group × frontal electrode sites main effect for ERN amplitudes ( for group:F =768,df=1,P =0.000 ; for frontal electrode sites:F =615,df=2,P =0.000 ; for group × frontal electrode sites:F =516,df=2,P=0.000),and a significant group,central electrode sites and group × central electrode sites main effect for ERN amplitudes ( for group:F=768,df=1,P =0.000 ; for central electrode sites:F =599,df=2,P =0.000 ; for group × central electrode sites:F =483,df=2,P =0.000).ERN amplitudes of PIU group were lower than those at control group.Conclusion Individuals with PIU present response monitoring dysfunctions and share neuropsychological and ERPs characteristics of compulsive-impulsive spectrum disorder,which supports that PIU is an impulse disorder or at least related to impulse control disorder.%目的 通过对病理性网络使用( PIU)者执行视觉修正的Eriksen侧抑制任务的错误相关负波电位(ERN)特征检测,探讨PIU反应监控功能缺陷的发生机制.方法 符合修订的《Young网络成瘾诊断问卷》(YDQ) PIU标准的23例作为研究组,与研究组匹配性别、年龄的23例健康人作为对照组.修正的Erikson侧抑制任务包括4种靶刺激,即2种一致性刺激(＜＜＜＜＜与＞＞＞＞＞),2种不一致性刺激(＜＜＞＜＜与＞＞＜＞＞).呈现时间250ms,被试反应时间为1100ms(包括刺激呈现时间250ms).记录被试者执行任务时的脑电图.应用BESA 5.2.0软件离线分析ERN波幅.结果 PIU组错误率[(19.8±3.45)％]明显高于对照组[(13.1±2.67)％](P＜0.01)；PIU组反应时间[(440 ±21) ms]明显短于对照组[(495 ±18) ms] (P＜0.01).重复测量的方差分析表明ERN波幅在组间、前额电极位点以及组间×前额电极位点显示主效应(组间:F=768,df=1,P=0.000；电极位点:F=615,df=2,P=0.000;组间×电极位点:F=516,df=2,P=0.000)；组间、中央电极位点以及组间×中央电极位点显示主效应(组间:F=768,df=1,P=0.000；电极位点:F=599,df=2,P=0.000;组间×中央电极位点:F=483,df=2,P=0.000)；IAD ERN波幅比对照组低.结论 PIU存在反应监控功能功能缺陷,具有冲动控制障碍谱系的神经心理与ERP的特征,支持PIU是一种冲动控制障碍或与之相关疾病的假设.