Well, clearly this is proven to be the case from countless "life after death" experiences, wherein patients who "died" in surgery later can tell the medical staff who they saw in the room (when they were supposedly dead), who did what, who came and went, or even events in other rooms in the hospital, or in other places.
Interestingly, I heard not long ago that some group of people was going to start researching this seriously, by placing images in ERs that could only be seen from the ceiling down. I haven't heard anything about it in a while though.
I think one of the most ironic things about the whole atheist thing or the disbelief in the human soul, is that it's SO obvious that for instance, there are "ghosts" and there are experiences people are having when their bodies are dead, that are apart from the physical, because the physical element is either simply not present (ghosts) or has ceased to function COMPLETELY. Yet, as atheists do, these things are ignored and never looked at by any respectable scientists. They're simply labeled hoaxes right off the bat, made fun of or made cheap by hoax filled TV programs, and finally simply dismissed.
Still, such things remain the most glaring evidence that the soul exists, and that it is an entirely separate thing from the body, especially in cases where it's a ghost, and the person is nothing but bones in body, so there's no chance it's a manifestation related to the body, even by the farthest stretch of the imagination. I hope that eventually people stop ignoring these evidences, and start taking them seriously... at least enough to say, "look people... we may not be able to explain this but... this IS real. These aren't hallucinations, hoaxes, whatever... these things are real, they're happening, and we need to try to understand them if we can."
Obviously, the "faith community" of the world is already a hundred steps ahead, but... it'd be nice if the atheists caught up eventually, at least as far as they can while being what they are.