The Effect of Suggestive Clues on Polygraph Problems on Brain Electrophysiological Responses

Zhen-Xing GONG, Xia SONG, Di XIN


Objective: To compare the two different prompt clues of the prompting and gazing points in the event-related brain potential features of three different stimuli types, such as stimulating strange pictures, familiar with picture stimuli and self-related picture stimuli. Methods: 35 college students were selected as subjects. The experiment was designed with 3×2×2 mixed experiments. The brain waves of the subjects were recorded and classified and superimposed and statistically analyzed. Conclusion: The amplitude of the prompt is smaller than the amplitude of the fixation point, and the average amplitude of the deception response is smaller than the average amplitude of the honest response. This may be because the prompts take up more brain resources and reduce the amplitude as well as the deceptive response.


Polygraph; Prompt clue; Even-related brain potential


Full Text: