Fig. 6.

Summary diagram. A proposed hypothetical scheme to illustrate the separation between brain systems involved in perceptual (brightness) judgment and those involved in affective (aesthetic) judgments, without implying that the two systems are not linked, either directly or indirectly. The system to the left (anterior insula, dlPFC, and IPS) is engaged during judgment of brightness (perceptual–cognitive) and of beauty (affective–aesthetic), whereas that to the right (mOFC and lOFC) is engaged in aesthetic judgments alone. The two motor pathways engaged in both kinds of judgment [premotor cortex (PMC) and SMA] to the left and the cortical motor systems involved in affective judgments alone (basal ganglia and cerebellar vermis) are shown to the right.