ERP analysis
ERPLAB (Lopez-Calderon & Luck, 2014) was utilized to calculate the
amplitudes of ERP components after averaging epochs for each condition
per participant. The occipital electrodes (Oz, O1, O2) were employed to
calculate the amplitudes of P1 and P2, the frontal electrodes (Fz, F1,
F2) to calculate the amplitudes of N2, and the parietal electrodes (Pz,
P1, P2) to calculate the amplitudes of P3 and LPC. The mean amplitudes
of P1, P3 and LPC were calculated over the respective intervals of
100-150 ms, 400-600 ms and 1000-1500 ms, while the mean amplitudes of P2
and N2 were calculated over the interval of 200-350 ms.