During the NDE, people experience an OOBE so there's no practical difference when what we're talking about is disembodied consciousness. There is some difference if you take into account the religious aspects, which makes NDEs and tunnels of light and alternate realms more like astral travel,
...which is why serious NDE researchers concentrate on the OBE part which seems to take place in the here and now. Unless there is information given in the later part of the NDE, which can be verified and hasn't been known to the experiencer before (such as the alleged "lost sister" in Dr Eben Alexander's account who he didn't know had died already), no one can say if there might be any truth to "the rest of the story", as PMH Atwater called it (she being an example of the more speculative kind of NDE researcher). So scientists can't say anything about that. It's what you reminded me of in our "born again" discussion: stick to the demonstrable facts.
My gut feeling is that religious experiences in NDEs are merely personal interpretations based on a deeper reality that can only be experienced in the mind and therefore is bound to be highly subjective. Dr Alexander's primeval forests and butterfly wings are very unlikely to have any objective existence and I think the same applies to religious figures or events described in NDEs.
Up to now we only have anecdotal evidence for the veracity of the alleged NDE-OBEs which include perception of events that can later be verified. I hope the AWARE study can shed some more light on that.
Independent research on OBEs alone (without bringing people near to death) might be insightful. There's enough people who claim to have these things on a regular basis, so why not put them to the test. I'll have to look up Charles Tart's experiments and if there has been done more scientific research (as opposed to individual experiments) on OBEs. I'm afraid there might be the same problem as Dr Rssell Targ reports with remote viewing, though, in that people get distracted quickly and tend not to get drawn to hidden numbers or coloured symbols at all, but to more exciting things. If I remember right, Charles Tart's successful number-reading OBE experiment was nothing more than a one-off.
That's what they did with medium research: putting the claims to the test. And, lo and behold, their "certified research mediums" had a much higher rate of "success" (in describing persons and events in their life that seemed to match real deceased people, who they absolutely had no way of knowing about) than expected. Which brings me back to the original point I wanted to make in this thread.
1. facts in NDE research: roughly a third of people from alll over the world and all walks of life who came near death and are resuscitated (in some instances it's "only" a perceived life threatening situation) report an episode of heightened awareness that seems to take place while their brain should hardly register any coherent thought at all. The details differ, but the overall experience is that of going to a place of light and emotional warmth which they don't ever want to leave. Afterwards they are mostly deeply changed.
2. facts in reincarnation research: children, 3 to about 6 or 7 years old, sometimes speak of memories that seem to belong to a deceased person. Often, these remarks (which can include names and places) can be verified.
3. facts in mediumship research: people who claim to be able to contact discarnate consciousness (or ratber be contacted by them) obviously sometimes really do know things about deceased persons they have no way of knowing. This can include facts that are not known even by the sitters and are not verified until after the sitting.
Furthermore I could include things like remote viewing which in some cases has undoubtedly had quite remarkable results (I'm not including any doomsday prohesies, ancient Mars dwellers or the description of Jovian landscapes here). Or dream telepathy, twin telepathy etc., Dr Sheldrake's telephone telepathy, sense-of-being-stared-at and animal telepathy experiments which all seem to indicate that consciousness is not limited to the brain.
So, all I'm saying, I guess, is, yes, I think there is quite a lot of evidence for "survivial of consciusness", at least approaching the amount of evidence for actual unexplainable UFOs. Which is kind of a lengthy way to be saying that, but I hope that I didn't bore anyone to near death. Or something.