particular region of anterior cingulate cortex (ACC) or a generalized malfunction in the entire neural network of reward processing (due to the central and influential role of ACC in the reward network). Further, our findings also showed that the cingulate area and a related structure in the reward network (i.e.. insula) showed prominence in the within-group differences between valences (i.e. loss vs. gain): in the ORP component, the gain conditions (+50 and +10) showed more current density activity (than the loss conditions) at the posterior cingulate area in controls and at the insula region in alcoholics. It is also to be noted that although amplitude of ERPs were different between the amounts (see Fig. 8), current density profiles could not differentiate between amounts. This finding suggests that differentiation in terms of current density of amount plays a less significant role than that of valence (loss vs. gain) in the reward network of the human brain.
