事件相关电位测谎技术原理探析

Principle analysis of the event-related potentials lie detection technology

目前国内对于事件相关电位测谎技术的研究主要侧重于方法设计和应用探索方面,而从原理上来看,事件相关电位测谎技术主要涉及记忆的再认和欺骗反应两个认知加工过程。本研究对记忆的再认和欺骗反应这两个过程进行了分析,并总结论述了个体在这两个认知加工过程中所产生的相关脑电效应及成分(Dm效应,P300等)和相关研究,深层次阐释了事件相关电位测谎技术的原理,为进一步提高事件相关电位测谎技术的效率提供了理论支持。

At present, the domestic research for the event-related potentials （ ERPs ） lie detection technology mainly focuses on the method of design and application of exploration, less from the principle perspective to carry on the comprehensive analysis.The article has carried on a deep analysis of the theory of ERPs lie detection technology on the basis of interpreting the ERPs lie detection and believes it is mainly related to two cognitive processes which involve the recognition of memory and cheating reaction. Because the suspect has the memory to the case , the first cognitive processe of the suspect is the recognition of memory when displaying the case related information to him. Then , the suspcct have to make chcating reactions which inconsistent with his eognition, inorder to pass the test of lie detection.When processing the recognition of memory and cheating reaction , the brain of the suspect will produce ERPs （ Din, P300, N400 etc. ） which show significant differences between relevant information and irrelevant information.And these elements are to distinguish whether he is really involved.A main task of ERPs lie detection research is to innovative methods to discover and select effective electrical components which can distinguish whether a subject has the memory of the case or whether he make a cheating.According to it , the examiner can find who has invovled in the case. Previous studies mostly analyzed separately the recognition memory or deceit, the article summarizes the relevant research on memory recognition and cheating.By analyzing the ERPs which reported by ever studys, the article believes that researher should foueus their eyes on the combined analysis analysis of recognition memory and deceit in the futhure.Generally, the rigor and scientificity of the ERPs lie detection technology were comprehensivly discussed in a theoretic perspective in the article.It will further improve the efficiency of event related potentials lie detection technology and has important theoretical significance on promoting the ERPs lie detection technology in practical application.