The term area 9 of Brodmann (human) refers to a subdivision of the cytoarchitecturally defined frontal region of cerebral cortex in the human. It occupies portions of the superior frontal gyrus and the middle frontal gyrus. Its approximate boundary on the medial aspect of the hemisphere is the cingulate sulcus and, on the lateral aspect, the inferior frontal sulcus. Cytoarchitecturally it is bounded dorsocaudally by area 8 of Brodmann (human), caudally by area 6 of Brodmann (human), and ventrally by area 10 of Brodmann (human), area 46 of Brodmann and area 44 of Brodmann ( Brodmann-1909 ).