The term area 11m (macaque) refers to a portion of the orbital gyri that is defined on the basis of internal structure in the macaque. It is one of two components of area 11 (macaque) in orbitomedial prefrontal cortex. The other component is area 11l (macaque). Features that distinguish it from some adjacent areas are its granularity and a bilaminate internal pyramidal layer (V) as revealed by Nissl stain ( Carmichael-1994 ). Its human equivalent is area 11m ( Ongur-2003 ). As thin, lightly granular prefrontal cortex, it has no equivalent in the rat ( Wallis-2012 ).