Hi! Is your child normally developed- growth, weight, does he walk and talk?
It is highly unplausible, that the brain waves are normal during these episodes. It sounds to me as generalised clonical cramps as in epileptoid episode. It can't be a behavioural thing since it occures also during the sleep. Your child needs medical attention ASAP. You don't have time to loose (by that I mean in next 2 weeks you should make an appointment for him in neurological department). As you said during these episodes he doesn't breath (which is common for people having epileptoid seizures). No breathing means no or not enough oxygen for the developing brain of your child, which means inadvertent brain damage. Now if he has so many seizures a day, sooner than later there will be more mush than brain in hes skull (please forgive the rude expression). That is why time is brain and medical attention is needed as soon as possible. Good luck!