Neurocognitive deficits in male alcoholics: An ERP/sLORETA analysis of the N2 component in an equal probability Go/NoGo task

► Examined N2 differences between abstinent alcoholics and normal males on a Go/NoGo task. ► N2 amplitudes were reduced in alcoholics compared to controls. ► NoGo N2 amplitude was larger than Go in controls at frontal regions but not in alcoholics. ► Controls had higher current density at the source than alcoholics only on NoGo trials. ► Current density at the source was higher for NoGo trials than Go in both groups.