Fig. 1.

A) Timeline relative to onset of stop signal. Onset of go and stop stimuli are shown. Left topographic maps shows N1 to successful gos for controls, right topographic maps shows N1 to successful stops for controls. B) ERP topography for controls (CN), patients (PT), and controls–patients (Cn-Pt) for N1 component for successful gos (left; 0.2 μV/step) and successful stops (right; 0.5 μV/step). Critical electrodes are shown in green. C) Grand average for successful go N1 component (left) and successful stop N1 component (middle). Time windows are shown in gray. Right panel shows correlation between N1 amplitude (successful stops) vs. SSRT.