You also don't have to be an epilieptic to have seizures from light or movie/TV strobing and/or auditory stimulation. As well there are different types or kinds of seizures. I can go through an EEG just fine. No seizure activity was ever detected in the several I've took. Basically anything which overtaxes a persons sensory processing system can trigger seizures but the person may not realize what they are having. One such type is this which I've had about 17 years now
Stimulus-sensitive myoclonus is triggered by a variety of external events, including noise, movement, and light. Surprise may increase the sensitivity of the individual.
An EEG won't trigger it but a movie like say Lion King can. I don't go too the movies LOL. Driving through a wooded area in the winter where light flickers between the trees to the eyes or on the pavment can trigger it. Certain tones like a back up alarm, fire alarm, or classical music. Store PA's turned up too loud or with a prompt tone also can do it.
I just go into violent upper torso spams or seizures. Each seizure last a few seconds and as many as several a minute in a bad attack. No passing out though nor any feeling I'm going too. It is limited in my case to specific plces only including shoulders, upper back, and neck. But if I don't stop the seizures I can go into a kind of a brain fog of where am I. how did I get here, where was I going, loss of time, etc. It can also easilly be misdiagnosed as Panic attacts. Been there done that for several years.