Figure 2.

The psychotic experiences (PE) group showed similar FRNs to punishment and reward, with a numerically larger feedback-related negativity (FRN) to reward than punishment (225–325 ms post-stimulus) elicited at the FCZ electrode for each of the groups. Note that following common event-related potential (ERP) research convention and because the FRN is a negative deflection, negative values are plotted upwards. (a) Grand average waveforms comparing the unexpected reward (UR) and unexpected punishment (UP) conditions for each of the groups. (b) Grand average waveform for the unexpected reward (UR) condition. (c) Grand average waveform for the unexpected punishment (UP). (d) Grand average difference waveform for Reward Sensitivity Differences Score (UP FRN−UR FRN).