The results of the voxel-by-voxel comparison of current density across groups and conditions are shown in Fig. 6 and Table 1. For the ORN component, alcoholics showed less negative current density compared to controls at postcentral gyrus, inferior frontal gyrus and precentral gyrus. In the ORP component, alcoholics showed decreased current density at anterior cingulate gyrus (BA-24). Differences between valences were significant only in the ORP component, wherein Gain showed more activity than Loss at posterior cingulate area (BA-23) in controls and at the insula region in alcoholics. However, current density differences were not significant for amount.
