"No asymmetry or epileptiform activities were observed throught the recording"
I'm pretty sure epileptiform activities would be when the waves (or whatever) are characteristic of epilepsy. Just going by that last sentence looks like everything is normal.
But I also know that unless they can catch a seizure while hooked up to the EEG, the EEG will usually appear as normal. And most people aren't triggered into a seizure by hyperventilation or flashing lights. So it kind of *****. A long term video EEG would be your best bet.
After a quick check with wikipedia it sound to me like that is what it should say if everything was normal. Of course I'm no doctor and have to training in such matters. :)
Dennis
Heck, I fell asleep during my EEG 28 years ago! But don't remember what the reports said. At that time they were not considering MS so can't help you there. Keep us posted, am sure we can all learn something from it.