Both groups differed significantly on Go and NoGo N2 amplitudes, where alcoholics had reduced N2 amplitudes compared to normal controls. These differences were observed at all except occipital and left temporal regions for the NoGo N2, whereas for the Go N2, these differences were observed at frontal and central regions (Table 5). The NoGo N2 accounted for the maximum difference between groups and was observed at frontal regions followed by central regions (Table 5). Age did not have significant effects on the outcome. This indicates that the observed main and interaction effects and differences are comparable across age (Table 3).
