摘要
目的研究网络成瘾患者面孔早期加工的脑机制。方法被试者分为正常对照组18—21岁和网络成瘾组17—22岁，各10名，均为右利手。刺激包括3种卡通面孔（中性、微笑、愤怒）和3种非面孔，要求被试者进行面孔识别任务，同时记录32导脑电。结果1）对照组产生了明显的颞一枕区分布的面孔特异性成分Nd170（面孔的N170减去非面孔的N170）；2）与对照组相比，网络成瘾组Nd170表现为明显的枕区分布，且幅值显著增强、潜伏期明显提前。结论网络成瘾患者可能具有与正常被试者不同的面孔早期加工机制。
Objective To study early face processing of internet addiction patients by using ERP method. Methods Ten healthy young man 18 - 21 years and 10 internet addiction patients 17 - 22 years served as subjects in experiment. Two runs of 300 stimuli （duration： 50 ms） of 3 facial and 3 nonfacial pictures were randomly presented with equal probability （ISI： from 1 000 ms to 1 500 ms randomly）, and the subjects were asked to react to facial stimuli and non-facial stimuli by pressing the left button and right button respectively as quickly as possible. Thirty two channel electroencephalogram （EEG） was recorded by Neuroscan Nuamps System. Results 1） Specific-face component Nd170 （face N170 minus object N170） was found in both groups, which was distributed at the temporal-occipital region in control groups but at occipital region in internet addiction group; 2） Compared with Nd170 in internet addiction group, Nd170 was significantly lower at occipital negion and delayed in control group. Conclusion The early face processing mechanism of internet addiction patients may be different from normal people.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2007年第1期72-74,共3页
Space Medicine & Medical Engineering
基金
国家自然科学基金项目(30300113)
关键词
网络成瘾
事件相关电位
面孔识别
N170
internet addiction： event-related potentials （ ERP） ： face. ne.rce.ntinn. N17N
