Our EEG results seem to show more pronounced coherence differences between NSAC and LTAA in the left hemisphere. The vast majority of participants were right handed (18/21 NSAC, 18/20 LTAA), so the laterality of difference cannot be explained by handedness. However, our original voxel-wise analysis using the same rs-fMRI images and NAcc seed-correlation maps as used in this paper revealed significantly higher strength of RSS in LTAA vs. NSAC between the NAcc and the left DLPFC only (Camchong et al., 2013b), and other recent work in actively drinking individuals showed lower synchrony (and therefore less ability to inhibit their alcohol consumption) in AUD vs. controls for the left but not right executive control network (Weiland et al., 2014). Our EEG coherence results appear to reflect the laterality of resting-state fMRI differences between alcoholics and controls reported in the literature.
