In the current study, total ERO theta power (which is a combination of both phase-locked and non-phase-locked activity) was computed from the outcome trials of the larger loss and gain conditions (50¢). Specifically, theta power (3.5–7.5 Hz) within the TFR corresponding to the 200–500 ms post-stimulus time window underlying both N2 and P3 components (Karakas et al., 2000; Harper et al., 2014) during ‘loss 50’ and ‘gain 50’ conditions was extracted at frontal (F3, FZ, F4), central (C3, CZ, C4), and parietal (P3, PZ, P4) regions. The average number of trials were 26.21 and 28.43 for the loss and gain condition, respectively.
