The time-domain components were identified through visual inspection of grand average ERP waveforms. The time-domain N2 was defined as the maximal negative deflection in the ERP occurring between 179.69 and 390.63 ms post-stimulus, relative to a -101.56 to -7.81 ms baseline, and the P3 was defined as the maximum positive deflection occurring between 250 to 492.19 ms post-stimulus, relative to the same baseline (where ms corresponded to bins of a 128 Hz resampled signal). For statistical analyses, activity during the N2 and P3 were quantified as the average of nine frontocentral sites which were most proximal topographically to the N2 and P3 no-go minus go differences (see Figure 1).
