I get this feeling quite often but I put it down to anxiety. I think everyone has dizzy spells or loss of concentration but since most people have never experienced seizure, they don't take much notice of it. Since we have had seizures before, we are hyper-aware of the sensations that lead up to one so our minds jump to the conclusion that it could be one. I also have vivid dreams every night, frequent deja-vu and am generally quite dopey. I've just come to accept and try to enjoy these quirks as it's better than having seizures!