the spatial extent of the visually responsive region of insular cortex was assessed and was found to be limited to a surface area of approximately 6-8 mm2 , the perimeter being delimited caudally by visually unresponsive cortex of the anterior sylvian gyrus , rostrally by the cortex surrounding the posterior third of the orbital sulcus ( ventral bank ) , dorsally by the rostral extension of the dorsal bank of the anterior ectosylvian sulcus , and ventrally by a visually unresponsive zone bounded by a region about 2 mm2 ventrolateral from the anterior ectosylvian sulcal infolding .
C0007776
cortex
C0228206
orbital