I had a 3-day in-home video EEG done recently. Someone came to the house, pasted on the electrodes, and set up video monitors.There were 4-5 electrodes on my forehead,1 on each temple, 2 on my chest, and 24, I think, all over my head. It really wasn't to bad. All the wires ran to this bag that looked like a video camera bag, under my arm. I had to carry that everywhere, but the only places with cameras were the 2 rooms they'd set them up in.
The main problem I had was that I was allergic to the adhesive that was used UNDER the electrodes. I'm thinking it may have had formaldehyde in it. It left my forehead and the 2 spots on my chest raw. It never hurt, just itched. My biggest reaction was on the last night of the whole procedure. I got horribly dizzy, almost threw up, I had to lay down because the room was spinning (violently spinning), had a loose stool, I was up nearly all night. It felt like more of an inner ear thing than anything else. This lasted about a week and 1/2. I've never had a seizure that bad, not with such a rapid onset or severe symptoms, so I suspect it must've been part of the allergic reaction.
Moral: ask any and all questions you may have, and don't be afraid to call either the neuro or the EEG center