The term area 14r refers to one of two subdivisions of area 14 in the straight gyrus of the human frontal lobe. Defined on the basis of multiple stains, it is a narrow granular area located rostral to the other subdivision, area 14c, which is agranular. On the medial surface of the lobe it is bounded dorsally by area 10m. On the ventral surface it is bounded laterally by area 13b. On both surfaces it is bounded rostrally by area 11m. For the relations of this segmentation and terminology to others, see Ongur-2003. Its equivalent in the macaque is area 14r (macaque).