The term area 10m refers to one of three subdivisions of area 10 in the human and macaque. Defined on the basis of multiple stains, in humans it occupies caudal parts of the superior rostral gyrus and the inferior rostral gyrus on the medial surface of the frontal lobe. It is bounded rostrally by area 10r, caudally by area 32pl, dorsally by area 24, and ventrally by area 14. The other subdivisions of area 10 in the human are area 10p and area 10r. Its equivalent in the macaque is located ventral to area 32o, rostral to area 25 and dorsal to area 14. In the macaque it has also been referred to as infralimbic area or area IL ( Preuss-1991; Ongur-2003 ).