Figure 1.

Visual processing pathways in monkeys. Areas in the dorsal stream, having primarily visuospatial functions, are shown in green, and areas in the ventral stream, having primary object recognition functions, are shown in red. Lines connecting the areas indicate known anatomical connections, with heavy arrowheads indicating feed-forward connections from lower-order areas to higher-order ones and open arrowheads indicating feedback connections from higher-order areas to lower-order ones. Solid lines indicate connections from both central and peripheral visual field representations, and dotted lines indicate connections restricted to peripheral field representations. Shaded region on lateral view of the brain indicates extent of cortex included in the diagram. (From ref. 85; for further details of the visual areas, see ref. 86.)