Did I have a seizure or do I have seizures?

I'm really curious to know if what I'm dealing with and have dealt with are or are not seizures. The first thing I want to talk about are my "twitches". I've recently done some research and I've read that my "twitches" may be some kind of seizures I get. Parts of my body randomly twitch at random times and I can't control it. Sometimes I get these violent "shivers" where my neck/shoulders/and sometimes my head and torso shake violently for a second or two. I'm completely alert while this happens. I also find myself staring into space sometimes, alert but almost unable to move my head or eyes. People may try to talk to me but I can't really figure out how to speak for a few seconds, then I snap back into reality. That may just be me zoning out though, I'm not sure. The second thing I wanted to bring up was a seizure/migraine thing I had a few months ago. When it was happening, we didn't know what it was and we still don't really know. I was sitting at the computer table and the game I was playing flashed lightning. At that point I got really dizzy and I tried to wander around a bit. From this point on are things I've been told about what happened because I can't remember most of it (it lasted roughly and hour). My dad helped me back to my room where I remember laying in my bed, not being able to move. After who knows how long later, my mom called me and she told me I was going to the hospital. She asked me what I get and what was happening but all I said was "I can't talk" because I was stuttering so bad. It took me maybe a minute to get it out. After a little bit 1 or 2 ambulance people came to get me out of my room. I remember seeing 6 men helping me to the living room, though there weren't nearly 6. Then I remember a whole bunch of people crowding me and doing things like checking my blood pressure. While this was happening I was crying a lot and couldn't help it. I think it was because I was scared. I was told that the men asked me questions and there weren't nearly as many as I saw. My the time they got me on the stretcher I was kind of alert. On the ambulance I either fell asleep or my memory blanked on me again. Once I was at the hospital I was almost fine; like nothing happened. We did a whole bunch of scans and I had someone look at my brain and they didn't find anything abnormal. They called my episode a migraine but I think otherwise. Does anyone have an idea of what this is and if my twitches are actually a type of seizure? Thanks.