Results of event-related potential analysis in Experiment 3.

<p>(<b>A</b>) Grand mean event-related potential (ERP) waveforms obtained during go trials, stop trials, re-go trials with an SRSI of 150 ms (re-go(150)), and re-go trials with an SRSI of 250 ms (re-go(250)). The waveforms at Fz, Cz, Pz, and O2 are shown as thick, colored lines, and the waveforms at the other sites are shown as thin, black lines. Vertical thin lines represent stop-signal onset, vertical dashed lines represent target time for the primary go trials, and vertical thick lines represent re-go-signal onset. Time scales relative to the target are displayed at the bottom. (<b>B</b>) Scalp topographies of grand mean ERPs in stop, re-go(150), and re-go(250) trials. They are displayed only at 0, 100, 150, and 250 ms relative to the target. The ERP difference topography of re-go(150) – stop are only displayed for 150 ms, and that of re-go(250) – stop are only displayed for 250 ms. Both time points correspond to 200 ms after re-go-signal onset. (<b>C</b>) Grand mean ERP difference waveforms (re-go(150) – stop and re-go(250) – stop). Vertical lines and time scale are displayed in the same manner as (A). (<b>D</b>) Scalp topographies of grand mean ERP differences (re-go(150) – stop and re-go(250) – stop). They are displayed at 100, 150, and 250 ms relative to the target.