Structure of the cingulate cortex. The anterior region of the mid cingulate cortex (MCC, shown in green) is a subregion called the anterior mid cingulate cortex of the ACC (aMCC); it has a variety of other names including the caudal ACC, the dorsal ACC (dACC), or cognitive division of the ACC (ACC-CD). pACC, anterior perigenual ACC; rACC, rostral ACC.