They have diagnosed stress related PTSD seizures
It doesn't sound like these folks would have been the most helpful; the consultant didn't give you any of the names that would help you research it...
@Lucycat posted a site that seems good.
I was looking over research on PNES and there are loads of studies during the last few years, not a ton before that, so finding a doctor or therapist who keeps up with this field might be helpful.
My non-professional impression of all the long words having to do with brain parts... it might be a side effect of dissociation, something to do with abnormal connections between parts of the movement areas, emotion areas -- including the limbic system (our favorite brain part! not just regular emotion, fight-or-flight level emotion)... other areas with long names... (my hippocampus is having a bad day, sorry. )
Also, one article actually mentioned that patients often have problems with medical specialists because no one medical specialty has yet to "own" PNES; use of the word "psychogenic" might cause neurologists to immediately shut down, for instance, esp. if they have not read any of these relatively new articles (common, because there are zillions of conditions to keep up on, unfortunately).
Many of us have had similar issues with doctors with other aspects of PTSD-related illness treatment too, I guess.:(
Please be gentle with yourself as you figure out next steps, this has sure been a rough couple of weeks.