erm ketamine for depression didn't come out of anesthesiology (it is based on animal models of depression suggesting a role for glutamate in the pathogenesis) nor did antipsychotics come out of surgical literature, Delay and Deniker were well on their to studying the effects of chlorpromazine (RP4560) on their patients before Laborit published anything on it (though they were certainly familiar)
TMS is quackery. I like to keep an open mind so I am getting trained in this voodoo but it all feels a little silly. I'm wondering whether thinking about just how ridiculous one looks with this giant magnet overhead doesn't help even the most depressed person crack a smile. The idea is somewhat risible.
Also if you read the literature on ketamine you will see this evolution from it being used as a model to develop more rapidly acting antidepressants to being touted and studied as a treatment for treatment-resistant depression itself, quietly ignoring the earlier papers that noted the problems that would prevent widespread use of this as a practical treatment.
Delay J, Deniker P. Le traitments de psychoses par une méthode neurolytique dérivée de l’hibernothérapie; le 4560 RP utilisée seul en cure prolongée et continue. CR Congr Méd Alién Neurol (France) 1952a; 50: 497-502.
Laborit H, Huguenard P, Alluaume R. Un noveau stabilisateur végétatif (le 4560 RP). La Presse Médicale 1952; 60: 206-8.
Berman RM, Cappiello A, Anand A, Oren DA, Heninger GR, Charney DS. Antidepressant effects of ketamine in depressed patients. Biol Psychiatry. 2000;47:351–4