Application of Eye Tracker in Lie Detection.

Objective To investigate the application value of eye tracking in lie detection. Methods The 40 subjects were randomly divided into two groups. The pupil diameter, fixation duration, points of fixation and blink frequency of the subjects in the experimental group in observing target stimulation and non-target stimulation were recorded with eye tracker after they accomplished the mock crime. The eye movement parameters of subjects in the control group were directly collected. The differences in eye movement parameters of the experimental group and the control group in observing target stimulation and non-target stimulation were analyzed by t-test. Pearson coefficient analysis of correlation between eye movement parameters that had differences was conducted. The effectiveness of eye movement parameters to distinguish between the experimental group and the control group was calculated by the receiver operator characteristic （ROC） curve. Results Participants from the experimental group had shorter average pupil diameter, longer average fixation duration and fewer fixation points （ 眼动追踪仪在测谎中的应用. 目的 探究眼动追踪在测谎中的应用价值。 方法 使用随机数字法将40名被试分为两组，实验组在实施模拟犯罪后利用眼动追踪仪记录其在观察靶刺激和非靶刺激时的瞳孔直径、注视时间、注视点和眨眼次数，对照组直接采集眼动数据。采用t检验分析实验组和对照组在观察靶刺激与非靶刺激时眼球运动参数的差异，用Pearson相关系数分析存在差异的眼球运动参数之间的相关性，用受试者操作特征（receiver operator characteristic，ROC）曲线估计眼球运动参数甄别实验组与对照组的有效性。 结果 实验组观察靶刺激与非靶刺激时相比，平均瞳孔直径减小、注视时间延长、注视点减少（ 司法精神病学；测谎；眼动；注视，眼；注视点；瞳孔直径.

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The authors of this article and the planning committee members and staff have no relevant financial relationships with commercial interests to disclose.