DEEP DIVE · CHAPTER 7

The Wanting Circuit

The dopamine reward circuit is the wanting circuit: it decides what is worth approaching. It can run too cold or too hot, and a patient labeled treatment resistant can have a drive problem, not a mood problem.

I have watched patients get called treatment resistant when the real problem was drive, not mood. In this chapter I walk you through the circuit that decides what is worth approaching, what happens when it runs too cold, and what happens when it runs too hot. I also tell you what a brain scan can and cannot say about the person sitting in front of me.

14 pages · 18 references, every one verified · written by Dr. Gurpreet Singh Padda, MD, MBA, MHP

Frequently asked questions

What does the dopamine reward circuit do?

The dopamine reward circuit is the wanting circuit. It decides what is worth approaching and supplies the pull to go after it. That makes it a circuit of drive, not of mood, and it can run too cold or too hot. Chapter 7 walks through both directions and what each one looks like in the person sitting across from the doctor.

Can the brain’s reward system run too high or too low?

Yes. The circuit that decides what is worth approaching can run too cold or too hot, and the chapter walks through what happens in each case. Either way, the problem can sit in drive rather than in mood. That difference changes what a physician should be looking at.

Why do some patients get labeled treatment resistant?

Sometimes the label points at the wrong problem. The author has watched patients get called treatment resistant when the real problem was drive, not mood. Drive lives in the wanting circuit, the dopamine circuit that decides what is worth approaching, so a plan aimed only at mood can miss it. Chapter 7 lays out that circuit and what a brain scan can and cannot say about it.