Figure 4.

Selective activation of the dorsal and ventral visual processing pathways and of dorsal and ventral prefrontal areas, as demonstrated in a PET study of spatial location and face working memory. Areas shown in blue and green had significantly greater rCBF during the spatial, as compared with the face, working memory task. Areas shown in yellow and red had significantly greater rCBF during the face, as compared with the spatial, working memory task. The two working memory tasks used identical stimuli. (Adapted from ref. 56.)