中国临床心理学杂志

模拟盗窃者与熟悉现场者在测谎实验中事件相关电位的比较研究

作者：周亮杨文俊廖四照邹海强

单位：南方医院神经内科广州 510515

分类号：R395.9

出版年,卷(期):页码：2000,8(2):86-88

摘要：

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。

Objective:To assess the effect of subjects for visiting condition on accurate of lie detection. Methods: 30 healthy undergraduates were chosen as subjects among which 10 subjects for the simulated criminal condition were required to participate in the whole criminal process, 10 subjects for visiting condition just have ever been to the simulated spot, and 10 subjects as controls. The stimuli were 8 criminal-related photos and 32 unrelated photos which were repeated 5 times and randomly appeared on the screen. Chosen one photo as a target. The subjects were requited to press the left button while the target appeared. P300 were recorded from Fz, Cz Pz. Results: The amplitudes and area of P300 to the related photos in the simulated condition were larger than those in visiting condition and the controls (P<0.001), there was no difference between the last two condition (P>0.1). Discrimination analysis was used and the correct rate of distinguish was 100%. Conclusion: The result further proved the feasibility of using P300 as a good index for the lie detection.

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参考文献：

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