事象関連電位 (P3及びCNV) を指標とした虚偽検出

抄録

This experiment was designed to examine the possibility for the detection of deception by ERP. A total of 19 subjects received random sequences of the subject's own last name and four other names on a CRT. The subject's task was to orally reply either “true” or “false” to the presented names. In this research, estimated components were calculated by a combination of principal component analysis and multiple regression analysis.
The mean wave for P3 was larger for the subject's own name than for the other names regardless of subject's verbal response. In addition, the estimated wave indicated that the difference in P3 depends on P3a component. Furthermore, during Si and S2 the negative component increased and delayed in only false verbal response to the subject's own name. These results suggest that the P3 and the negative component can be used as an index of the detection of deception.