Figure 5.

Single trial activation-based analyses. A, Data (N = 19) show higher activation for CS+ stimuli compared with CS− stimuli in the dorsal ACC and the anterior insula, but not in the amygdala or superior frontal gyrus. In the superior frontal gyrus, differential mean activation could not account for differential correlations. B, A correlation between differential amygdala activation (CS+ − CS−, averaged over seven trials) and differential within-stimulus correlations (CS+ − CS−, averaged over six trial-to-trial Fisher-transformed correlations) in the visual cortex are in line with theories about the role of the amygdala in refinement of visual processing.