The term Subregio postcingularis refers to a composite substructure of the cingulate region. It is defined on the basis of cytoarchitecture to include the areas of that region with a well developed internal granular layer (IV). Its boundary with the Subregio praecingularis is located at about the anterior-posterior level of the central sulcus. It is composed of the area 31 of Brodmann (human) and the area 23 of Brodmann (human) ( Brodmann-1909 ).