I am not sure if it's relevant to your question, because I am still not sure what your question is (bad brain day), but I have had seizures before, of several types, from absence to gran mal (complete with the messy bits), for several years they thought I may be epileptic. So I have some experience with what a seizure feels like from the inside, it's characteristics, how it affects me. I also appear to be unusual in that I observe things like this, study them as much as is possible, while they are occuring, when I've asked others, epileptics and others, about such things, observations made during a fit, their brain reboot sequence, they have no idea what I am talking about - so I assume few others are able to maintain a thread during such events, or that they have been unable to store the memories
I have also had several TIA's in the past (I used to smoke, a lot, my blood used to look like tar, black runny tar, and I had a tendency to develop DVTs quite often), and, I think, one stroke (undocumented), I still on occasion suffer from some after effects of this, if it wasn't for the simple longevity of the symptoms I would have assumed it was a TIA also but a TIA doesn't leave problems that persist for days let alone years.
The events described by me earlier in the thread feel like a seizure, this impression is biased by the types of things that "degrade" my functioning prior to them occurring, not in every case, but given the end result is the same it seems likely that in all cases it's a seizure type event, although a lot of the effects are physical it's essentially a closed loop, it's my brain, the one that's having a seizure, that's interpreting the way my body feels at the time.
No idea if any of that makes sense, answers your question or simply confuses the issue
ETA - Theory - I think, and am almost definitely wrong, and will probably change my mind, such as it is, in 10 minutes, that any type of load, environmental shocks (noise, light, flickering, movement etc.) is sensitising my brain, making it less efficient at processing, there comes a point where virtually any stimulus will set off a cascade and I will experience one of these "seizures", sort of like a cross between an epileptic seizure and a panic attack (even though I am not anxious, paniced or these days even particularly frustrated even during a "seizure", my dominant emotional state at those times would probably be best described by "determined" or "bloody minded" - it's more the rising level (or dropping level) of switching threshold in my brain, becoming inappropriately sensitive, as I would imagine happens in a panic attack).
Did that make any sense?
Bad brain day, too complex an idea to describe for now, sorry
