Near death experiences and this one in question. Real, made up, or still up for interpretation? Your thoughts?

I have heard of many NDE stories which are quite compelling. However, being the eternal skeptic, the jury is out for me until I see a positive result in a good, controlled study. And there is one going on in England (sorry, no link). Researchers have put a number of pictures on the top shelf of a recussitation room where none of the staff can see them. Those brought back from the dead will be interviewed to see if any of them can identify those pictures. If they can, that would convince me that they somehow rose up out of their bodies and looked down at the scene below. This is the sort of evidence I would need to go from "quite compelling" to "Yes, it's real," in terms of the whole near death experience thing.