Fig. 6.

Visual area boundaries measured using reversals in the angular visual field maps. a, The color overlay represents the angular position that produces the strongest response (rotating wedge stimulus). Data from areas V1–V4 are shown on a flattened representation of the posterior cortex. Theblue curve traces a path that traverses dorsal and ventral cortex, passing through the operculum. The preferred stimulus angle at locations along this curve is shown in b. The boundaries of several visual areas can be determined from the reversals (red arrows) in the curve representing the preferred stimulus angle. The inset shows the position of theblue curve on a three-dimensional rendering of the white–gray matter boundary. The dashed blue box shows the approximate region that was flattened for a. Scale bar, 5 mm; coherence, >0.12 (monkey B97).