(A) Event-related potential waveforms at Fz and Pz and (B) topographical distributions of the N200, N450, and P300 components elicited by the trials with low and high inhibitory demand in the Stroop Color−Word and Go/NoGo tasks. The N450 was assessed from the Stroop Color−Word task, and the N200 was assessed from the Go/NoGo task. The topographic plots are averaged over the latency range used to calculate the N200 (250−350 ms), N450 (400−500 ms), and P300 (Stroop Color−Word: 270−370 ms; Go/NoGo: 400−600 ms) components.