@caycep, thank you for such a clear explanation. If you are so inclined as to tweak descriptions of "Neuromodulation_medicine" (an overview by me) or other relevant entries on Wikipedia, I think they need that historical and technical background . . . I tried to create a scaffold there that could be elaborated upon by more knowledgeable folk and would be so happy to spark some contributions of insight to the overview there to make a more robust entry. (I personally found the barrier to entry to trying to edit there was low despite whatever drawbacks we've all heard about.)