Interesting question Shaysfordays!

Just as a somewhat related TANGENT to your question:

If you have an interest in the scientific/medical analysis of out-of-body-experience, then you might greatly enjoy the excellent SF (Sci-Fi) novel by Connie Willis, known as:

The Passage.

NOTE:

Personally, I only enjoy SF novels that are mostly scientifically accurate (based upon current known laws of science/physics, or mostly reasonable extrapolations about future technology, based upon current known laws, that are written by an actual scientist, or someone who is HIGHLY scientifically literate).

So, in other words, The Passage, is written by a HIGHLY scientifically literate author (Connie Willis) and it is based upon a reasonable extrapolation of what MIGHT be possible, based upon actual known medicine laws/medicine.

To write the novel, she had to interview/speak with many medical doctors.

In CONTRAST:

Any novel, or movie that goes far beyond known laws of physics, is otherwise known as "Fantasy" (or "horror" if it is spooky in nature!).

There is, of course, nothing wrong with fantasy/horror. I sometimes enjoy a good scary psychological horror movie! (Other people like/enjoy fantasy novels, such as Harry Potter, etc...)

In addition, some movies/novels are both: a hybrid of fantasy/Sci-Fi, such as Star Wars. Star Wars has many elements of true SF (scie fi), but also Star Wars has many elements of Fantasy (such as that entire Jedi-Feel-the-Force aspect).

For the MOST PART, I prefer true SF (science fiction), that is based upon reasonable extrapolations of known science.

So... again... I think you will GREATLY enjoy Connie Willis' novel: The Passage.

The strange thing about that novel, is that there are MANY so called "boring parts", involving a female doctor listening to her voice-mail messages and running up and down a bunch of hospital corridors.

I haven't quite figured it out yet: what so many scenes of this doctor listening to voice mails, and running around the hospital a lot?! But I suspect it might be a metaphor for something.

But ANYWAYS... despite a few "boring" scenes... which you can skim through if you don't want to read them all... the overall novel is really INCREDIBLE and very good, and touches on something that I think will be very appealing to you, since you are asking about the true science behind such hospital phenomena experienced by medical patients!