The term area PF refers to a cortical structure located in the anterior half of inferior parietal cortex, a region that is much expanded in humans relative to macaques and chimpanzees. It is bounded dorsally by area PFt, caudally by area PFm, rostrally by area PFop, and ventrally by area PFcm. Defined by multiple criteria, it is a major node in the task positive network. It is fMRI-activated in MOTOR CUE and SOCIAL TOM tasks. It is relatively deactivated in a STORY-MATH task. Other authors have referred to the same topological area as 40 or 72 and 88 of the Vogts ( Glasser-2016 ).