the P3 when go and no-go trials are equiprobable (Lavric et al., 2004; Falkenstein et al., 1999), and as the P3 response is notoriously sensitive to stimulus frequency (Yamaguchi and Knight, 1991), it is possible that the experimental effects are due in part to the rarity of no-go trials. In sum, the no-go N2 and no-go P3 reflect both overt and covert inhibition of prepotent responses and index general executive control processes.
