In the past 8 years, I have 2-4 grand mal epilepsy seizures each year. Happy to be still alive, haha. Every time after a seizure, I lost one small period of memory, about 10-30 minutes, it's amazing somehow, refreshing your brain like reinstalling the macOS and restarting, though it can also cause some depression because of deep fear for uncontrolled and unpredictable seizures.
After I get back my conscious gradually after a seizure, I can hardly call back the scenarios right before my brain blows up, I can only remember roughly what I was doing then, about 5-10 minutes before the seizure, and as babies, the first sight of the world when I get my conscious will leave very strong impression in my memory, extremely clear and cut.
Now I have not had a seizure for about a whole year, in fact, I miss it to some extent:-). On the other hand, I hope I will never have it until death.
You know, humans are always full of contradictions.