Bilateral cingulotomy
Neuroimaging also uncovered different sub-regions in the anterior cingulate cortex itself based on their function. These studies showed that the caudal part of the anterior cingulate cortex plays a more important function in cognitive activities that involve attention, salience, interference and response competition. These results combined with electrophysiological investigation of the function of neurons in the anterior cingulate cortex have provided insights that can be used in the improvement of cingulotomy performed on patients treated for OCD. The basis behind this idea is the fact that a variation of certain tasks, Emotional Stroop tasks (ES), which have been particularly identified as exerting effects in OCD patients activate neurons in the more rostral part of the anterior cingulate cortex. Thus, theoretically if bilateral cingulotomy is performed in such patient in the rostral anterior cingulate cortex, better results should be obtained.
Cingulate cortex
This corresponds to areas 24, 32 and 33 of Brodmann and LA of Constantin von Economo and Bailey and von Bonin. 
It is continued anteriorly by the subgenual area (Brodmann area 25), located below the genu of the corpus callosum).
It is cytoarchitectonically agranular. It has a gyral and a sulcal part. 
Anterior cingulate cortex can further be divided in the perigenual anterior cingulate cortex (near the genu) and midcingulate cortex. The anterior cingulate cortex receives primarily its afferent axons from the intralaminar and midline thalamic nuclei (see thalamus). 
The nucleus anterior receives mamillo-thalamic afferences. The mamillary neurons receive axons from the subiculum. 
The whole forms a neural circuit in the limbic system known as the Papez circuit.
The anterior cingulate cortex sends axons to the anterior nucleus and through the cingulum to other Broca's limbic areas. The ACC is involved in error and conflict detection processes.