The observation of shorter latencies of ERP components in TNAD vs. NAC was unexpected. Our finding is of a primary reduction in P3a latency, which was partially reflected in N2b and P3b latency. If anything, most studies have observed P3 latency increases in alcoholics. However, this result is in agreement with our recent report (Smith and Fein, 2010) on neuropsychological testing on a matched subset of the samples studied. That report showed intact cognitive function in TNAD, with an unanticipated effect of better attention domain scores in TNAD, possibly reflecting compensatory attention strategies in heavy drinking functional alcoholics. Correlation analysis showed that the P3b latency was significantly negatively correlated with the neuropsychological assessment attention domain, consonant with the reduced P3 latency observed here being a reflection of the same phenomenon observed in our earlier paper on neuropsychological assessment in these same subjects. Thus, although we acknowledge that this finding may reflect a Type 1 error, it is also consistent with reflecting compensatory attentional strategies in heavy drinking functional alcoholics. Finally, we observed a decrease in N2b amplitude that was about
