The balance between inhibitory and excitatory neurons normally prevents runaway excitation and seizures.

“to get to the heart of what a seizure is it is essentially runaway excitation in the brain a small region of the brain becomes especially electrically active and then it spreads out from that fosi that focus of the excitation and it recruits a lot of neurons in a fairly non-specific way creating these seizur like motor patterns in the body and patterns of activity in the brain that can involve engagement from immediate experience and lack of perception sometimes there's Aura there's a whole discussion to be had about seizure and by the way seizure can occur in a lot of different contexts of course it can occur in epilepsy it can occur after a head injury Etc we'll cover seizure in a future episode of this podcast of course”