In a larger study, Colrain et al. (2009) studied 42 abstinent long-term alcoholics (27 men) and 42 controls (19 men). As in the previous study (Nicholas et al. 2002), alcoholics were significantly less likely to produce K-complexes than controls. P2 amplitude was, however, smaller in alcoholics than controls with the difference being largest at Cz, where the component was maximal, … Read More