and I found this:
“Using all his might, Thor breaks out of his shackles, but –
– S142
ZAPS him again. Paralyzed by superheated veins.“So that obedience thingy doesn’t work by electrocution. Gross.
This gives me too many extra Loki feels. My Poor Little Blue Popsicle was left there BOILING??? NOOOO!!!!!
I think it might just be a way of describing the effects of electrocution – electricity does make the body parts it affects heat up (according to this probably totally legit source I just found by googling).