I was epileptic throughout puberty. After it was diagnosed and i understood what was happening, i started to recognize the feeling of absence/petite mal seizures before they happened. I used to refer to it as an "aura" because i had no better way to phrase it. Medication was a silver bullet for me and it all went away by my early 20s.

I've not had a seizure since, but the closest i have come to experiencing that "aura"-like sensation since has been times of extreme auditory load: loud, frantic music mixed with hustle and bustle around me. And i'm a regular (sober) concert attendee. I've never had a seizure from these situations, but the article puts to words a sensation i've never really voiced to others.