The term area 9 of Mauss refers to a subdivision of the frontal lobe of the macaque and the guenon; it is defined on the basis of myeloarchitecture. Mauss regarded it as topologically homologous to the cytoarchitectonic area 9 of Brodmann (guenon) ( Mauss-1908 ).
Also known as: Area frontalis oralis, area 9 of Mauss, Mauss's area 9