The term area 24' refers to a part of area 24 in midcingulate cortex of the human, macaque, rat and mouse ( Vogt-2016 ). Defined architectonically, it is located for the most part in the caudal half of the anterior cingulate gyrus of the limbic lobe. It includes three subareas of anterior midcingulate cortex: area a24a', area a24b', and area a24c', and two subareas of the posterior midcingulate cortex: area p24a' and area p24b', ( Vogt-2009; Vogt-2012 ). In the macaque, the posterior midcingulate cortex contains an area p24c' as well ( Vogt-2016 ), In the rat and mouse, the area has only two subareas 24a' and 24b' ( Vogt-2016 ).