3.5 Correlations between N200, recognition-P300 and
feedback-ERPs
To explore the neural activity difference between the recognition phase
(probe vs. irrelevant) and the feedback phase (success vs. failure
following probe and irrelevant), we compute the Pearson’s correlation in
both guilty and innocent participants. Specifically, the difference
scores (probe minus irrelevant) for the N200, recognition-P300, FRN and
feedback-P300 were calculated. Since our main purpose is to distinguish
between probe and irrelevants, the FRN and feedback-P300 were collapsed
across successes and failures. Results showed that among guilty
participants, there were no correlations between recognition components
and feedback components: rs (30) = -0.26 - 0.29, ps > 0.12. The correlation between FRN and feedback P300 was
also significant, r (30) = 0.56, p = 0.001 (for detailed
statistical results, see Table 2). The innocent group did not show any
significant correlations between ERP activities (rs <
0.33, ps > 0.08; for detailed statistical results,
see Table 3). The correlation between P200 and other ERP components can
be found in the supplementary materials (see Table S2).