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Compared Study of Event-related Potentials in Lie Detection between Subjects for Simulated Crime Condition and Subjects for Visiting Condition
Author(s): 
Pages: 86-88
Year: Issue:  2
Journal: CHINESE JOURNAL OF CLINICAL PSYCHOLOGY

Keyword:  P300事件相关电位测谎模拟盗窃;
Abstract: 目的:探讨P300用于测谎的可行性.方法:志愿者30人,随机分为模拟盗窃组、熟悉现场组和对照组,模拟组参与模拟盗窃,熟悉现场组曾到过模拟现场,对照组未到过现场,以模拟现场和被盗之物照片为相关刺激,并与无关照片组成刺激序列,诱发P300,比较两种刺激的P300波幅,波面积和潜伏期,并建立判别方程,对每一个体进行判别.结果:模拟组相关照片的P300波幅较熟悉组大(P<0.001),判别的准确率为100%.结论:实验条件下P300做为客观指标用于测谎是可行的,熟悉现场者参与测谎不会产生假阳性结果.
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