青少年网络成瘾者人格特征与事件相关电位P300的关系

目的 探讨青少年网络成瘾（IAD）者人格特征与事件相关电位P300的关系.方法 对42例青少年IAD者及40例非IAD者分别进行了艾森克个性问卷和事件相关电位测定,并将结果加以比较.结果 事件相关电位测定青少年IAD组N2及P3波潜伏期[分别为（267.2±24.2） ms、（374.5±22.0） ms]较非IAD组[分别为（235.7±21.8） ms、（332.3±23.5） ms]延长,P3波幅[（3.9±2.5） μV、（7.8±2.4）μV]降低,差异有统计学意义（P＜0.01）.艾森克个性问卷调查显示,青少年IAD组的精神质（P）及神经质（N）2个维度分[分别为（56.2±9.4）分、（49.8±7.4）分]均明显高于非IAD组[分别为（51.9±9.7）分、（42.4±7.5）分],差异有统计学意义（P＜0.01）,而青少年IAD组内外向（E）和掩饰（L）维度分[分别为（45.7±9.0）分、（44.3±7.9）分]明显低于非IAD组[分别为（51.2±9.4）分、（50.9±8.3）分],亦差异有统计学意义（P＜0.01）.艾森克个性问卷与事件相关电位成分中P300波的相关分析显示,青少年IAD组P300波潜伏期与P、N维度分呈正相关（r=0.49和r=0.54,P＜0.01）,与E、L维度分呈负相关（r=-0.43和r=-0.46,P＜0.01）;P300波幅与P、N维度分呈负相关（r=-0.41和r=-0.50,P＜0.01）,与E、L维度分呈正相关（r=0.45和r=0.47,P＜0.01）.结论 青少年IAD存在一定的人格特征和认知异常,且人格与事件相关电位P300有一定的联系.

Relationship on personality characteristics and event related potential P300 with internet addiction disorder of youngsters

Objective To explore the relation between personality characteristics and event related potential P300 with internet addiction disorder（IAD） of youngsters.Methods Eysenck Personality Questionnaire and event related potential test were used for forty-two IAD and forty non-IAD in youngsters,and the results were compared between the two groups.Results The latency of N2,P3 （（267.2±24.2） ms,（374.5 ±22.0） ms） of event related potential in IAD group were significantly longer and the amplitude of P3 （（3.9± 2.5） μV） was significantly lower than those in non-IAD group（（235.7±21.8） ms,（332.3±23.5） ms,（7.8±2.4） μV） （P〈0.01）.And the indexes of P,N score （56.2±9.4,49.8±7.4） of Eysenck Personality Questionnaire were significant higher than those in non-IAD group（51.9±9.7,42.4±7.5）（P〈0.01）,but the indexes of E,L score （45.7±9.0,44.3±7.9）of Eysenck Personality Questionnaire were significant lower than those in non-IAD group（51.2±9.4,50.9±8.3） （P〈0.01）.Correlation analysis showed that there were remarkable positive correlation with latency of P300 and P,N score of Eysenck Personality Questionnaire respectively in IAD group（r=0.49,0.54,P〈0.01）,and a significant negative correlation with E,L score（r=-0.43,-0.46,P〈0.01）,there was a remarkable negative correlation with amplitude of P300 and P,N score of Eysenck Personality Questionnaire respectively in IAD group（r=-0.41,-0.50,P〈0.01）,and a significant positive correlation with E,L score（r=0.45,0.47,P〈0.01）.Conclusion IAD in youngsters has personality characteristics and cognitive dysfunction,and it has a relation with personality and event related potential P300.