Regarding differences between task conditions: (1) the NoGo N2 amplitude was significantly larger compared to the Go N2 at frontal regions only in the control group, (2) the NoGo N2 amplitudes at the frontal regions and the Go N2 amplitudes at the central regions were largest in both groups. Further, the NoGo trials in the control and the Go trials in the alcoholic subjects elicited the largest N2 amplitude across regions, (3) in the sLORETA analysis, difference plots revealed maximum significant activation (current density at the source) in both groups during the NoGo task at right cingulate cortical regions in the time-range of N2. However, in the control group, the activation was much higher and bilaterally widespread than in the alcoholic group.
