Curate, connect, and discover
guys. danny phantom is not possessing his own body. if he was, whenever he was "going ghost" his body would drop to the ground. the electricity killed and jump started his heart while his cells mixed with the ectoplasm powering the portal at the same time.
he's half dead, he can switch between human and ghost because of the change in his molecular structure.
the accident messed with his atoms and gives him more control over his body, he's just using wave function to quantum tunnel and stuff like that.
at least, that's how i see it.