 Its rostral and caudal borders are approximated by the anterior subcentral sulcus and the posterior subcentral sulcus, respectively.Cytoarchitecturally, it is bounded rostrally, by the agranular frontal area 6, and caudally, for the most part, by the caudal postcentral area 2 and the supramarginal area 40.Brodmann Area 43 responds to pressure on the eardrum and to oral intake (eating and drinking).