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探讨P30 0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P30 0 ,比较两种刺激的P30 0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P30 0波幅较熟悉组大 (P <0 .0 0 1) ,判别的准确率为 10 0 %。结论 :实验条件下P30 0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。
Explore the feasibility of P30 0 for polygraph detection. Methods: 30 volunteers were randomly divided into simulated theft group, familiar with the scene group and the control group, the simulation group involved in the simulation of theft, familiar scene group had been to the simulation site, the control group had not been to the scene to simulate the scene and stolen The photos were related to stimuli, and stimulated with irrelevant photos to induce P30 0. The amplitude, wave area and latency of P30 0 were compared between two stimuli, and discriminant equations were established to discriminate each individual. Results: Compared with the familiar group, the amplitude of P30 0 in the related pictures of the simulated group was larger (P <0.01), and the accuracy of the discriminant was 100%. CONCLUSION: It is feasible to use P30 0 as an objective measure under the experimental conditions for the polygraph test. Familiar locals who participate in the polygraph test will not produce false positive results.