The term area p24 refers to a narrow strip of anterior cingulate cortex located adjacent to the upper surface of the genu of the corpus callosum ( Vogt-2012 ). It is bounded caudally by area a24pr, rostrally by area a32pr and area d32, and ventrally by area a24. Defined in the human by multiple criteria, it is fMRI-activated in MOTOR CUE, LANGUAGE MATH-STORY and WORKING MEMORY tasks. It is deactivated in LANGUAGE MATH, RELATIONAL-MATCH and SOCIAL RANDOM tasks. Other authors have referred to overlapping parts of the same topological area as 24 and 24b ( Glasser-2016 ). The macaque has an equivalent area 24b ( Vogt-2012 ). Equivalents in the rat and mouse may be present in the anterior cingulate area of the rodent ( Swanson-2004 ).