knowsnothing,
I would also like to suggest that you do some extensive research/reading about DISSOCIATIVE STATES OF CONSCIOUSNESS - a university library would be a good resource for such research.
Also of interest in this regard, is the work done by Felicitas Goodman which includes her books: "How About Demons"; "Trance, Healing, and Hallucination: Three Field Studies in Religious Experience" and more.
Kind regards.