4.5 Conclusion
In sum, our study examines whether fCIT can be used to detect concealed
autobiographical information. We found that the probe elicited a
conflict-monitoring more negative N200 and a more positive recognition
P300 than the irrelevants in the guilty participants, but not in the
innocent participants. We also note that feedback following the probe
elicited a greater feedback P300 than feedback following the
irrelevants, again, in the guilty but not the innocent group. Further,
individual analyses found that conflict-monitoring N200 (AUC=0.77),
recognition P300 (AUC=0.91), and feedback P300 (AUC=0.96) could
efficiently distinguish guilty from innocent participants. Exploratory
analysis found that when the P200 component is included as an additional
indicator, the deception detection efficiency of the combination of
P200, N200, P300 and feedback P300 can reach a near-perfect AUC of 0.99.
These results provide evidence that combining recognition,
conflict-monitoring and feedback-related ERPs can effectively detect
concealed autobiographical information in fCIT.