title: Event-related potentials increase the discrimination performance of the autonomic-based concealed information test.
abstract: The concealed information test (CIT) assesses an examinee's crime-relevant memory on the basis of physiological differences between crime-relevant and irrelevant items. The CIT based on autonomic measures has been used for criminal investigations, while the CIT based on event-related potentials (ERPs) has been suggested as a useful alternative. To combine these two methods, we developed a quantification method of ERPs measured in the autonomic-based CIT where each item was repeated only 5 times. Results showed that the peak amplitude of the ERP difference wave between crime-relevant and irrelevant items could discriminate between guilty and innocent participants effectively even when only 5 trials were used for averaging. This ERP measure could detect some participants who were missed by the autonomic measures. Combining the ERP and autonomic measures significantly improved the discrimination performance of the autonomic-based CIT.
authors.affiliation: National Research Institute of Police Science, 6-3-1 Kashiwanoha, Kashiwa, Chiba, Japan. izumi@nrips.go.jp
authors.forename: Izumi
authors.initials: I
authors.lastname: Matsuda
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Nittono
authors.forename: Tokihiro
authors.initials: T
authors.lastname: Ogawa
mesh_terms: D000161:Acoustic Stimulation; D000328:Adult; D001341:Autonomic Nervous System / Q000502:physiology*; D003627:Data Interpretation, Statistical; D004192:Discrimination, Psychological / Q000502:physiology*; D004569:Electroencephalography; D018913:Event-Related Potentials, P300 / Q000502:physiology; D005071:Evoked Potentials / Q000502:physiology*; D005260:Female; D005712:Galvanic Skin Response; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008014:Lie Detection / Q000523:psychology*; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D012372:ROC Curve; D012039:Regional Blood Flow / Q000502:physiology; D056152:Respiratory Rate; D012867:Skin / Q000098:blood supply; D055815:Young Adult