Leslie, I’m not sure about replying to, “I’d like to hear a little more about limbic activity during eating…” as I’ve no way to know your question. But, here goes…
I believe the potential for dopamine release is always there in the limbic system (more so in some people than others), much like fertile ground. If seeds are sown and nurtured in that soil, plants of desire will readily take root and flourish. By “working through desire” they begin to wither and some even die off.
Maybe we can think of eating a meal as planting more seeds, especially if it’s pleasurable, due to dopamine and opioid release. So although the largest plants can be kept pruned back, there’s a basic, ongoing weeding maintenance, just like any garden.
Well, it makes sense to me!