Hi there,
your symptoms sound very similiar to mine.
i get very dizzy and then it is like my brain switches off for a second, like a zap and i come to on the floor, usually in a kneeling position. this happens several times and then stops.
witness's said it was like i was having electrical shocks through my body.
i feel no pain.
I've am being treated for panic disorder, but I personnally don't think this is the cause.
I am however terrifed of these attacks and am very anxious about having another one, so the treatment for panic disorder will at least take nervousness away i suppose.
i am having a heart moniter fitted on tues, that i wear for four days and am seeing a neurologist in july, so i will let you know what happens