Mock crime application of the concealed information test using fNIRS
combined with SCR, HR and RT
Abstract
To explore the forensic application of neuroimaging-based concealed
information test (CIT) with combined multiple measurements, the
simultaneously recorded data of functional near-infrared spectroscopy
(fNIRS), skin conductance responses (SCRs), heart rate (HR), and
reaction time (RT) is collected in order to detect participants’
concealed information in a standard CIT with a mock crime scenario. We
hypothesized the fNIRS-based neuroimaging data could successfully detect
deception, and the combination of multiple indicators could integrate
multidimensional information triggered by deception, thus providing
enhanced efficiency in deception detection. The results validated the
hypotheses that fNIRS-based neuroimaging data could effectively
discriminate between guilty and innocent participants after a mock
crime. Furthermore, the use of multiple indicators resulted in a much
higher detection efficiency (AUC = 0.96 with fNIRS channel 8) compared
to the use of a single indicator (AUC = 0.66-0.86). These results
illustrate the potential of the combination of fNIRS and multiple
indicators for deception detection with a mock crime scenario and
further facilitate the forensic application of fNIRS-based CIT.