You might be able to simulate that with psychedelics, meditation, or perhaps if they ever figure out how to reliably induce specific states with trans-cranial magnetic stimulation. Then someone can make a choice.

I’ve had experiences where I was aware of people and what was going on, but from the outside, it looks like I am passed out. It wasn’t really that bad.

I know of others who experience what is typically called “sleep paralysis”. It often comes with hallucinations and night terrors.