A 17-year-old male high school junior comes to the clinic to establish care. He recently moved from a relatively urban area to a very rural area and has just started his junior year in a new school. The mother states that she has noticed that her son has been frequently washing his hands and avoids contact with any dirty or soiled object. He uses paper towels or napkins over the knob on a door when opening it. According to the mother, this behavior has just appeared since moving. The patient, upon close questioning, admits that he is “grossed out” by some of the boys in the boys’ room since they use the toilet and do not wash their hand afterwards. He is worried about all the germs the boys are carrying around. Past medical history is noncontributory. Social history -lives with parents and 2 siblings in a house in a new town. Is an honors student. Based on these behaviors, The APRN thinks the patient has obsessive-compulsive disorder (OCD).
Describe the role the dorsal anterior cingulate cortex (dACC) has in reinforcement of obsessive behaviors.