Effect of emotional faces. Brain activation for the comparison of all trials containing an emotional face (columns filled in red) versus trials with neutral faces (columns filled in black). Significant activation was observed in right superior frontal gyrus (BA6), in the inferior frontal gyrus (BA45), extending to the middle frontal gyrus (BA9) and the right orbitofrontal cortex (BA 47, not visible in this projection), and the insula bilaterally. The plot shows the BOLD signal changes in the right superior frontal gyrus for all experimental conditions. The activation map is rendered at a threshold of P
corr. = 0.05, at the cluster level. Deont., deontological; Altr., altruistic.