How do I get an NDE thread on the main page?
Your references are useful and I may try to read them if I can at some point.
I think the subject has probably a very extensive body of literature from many perspectives and certainly while I am writing on my phone I feel very limited but I certainly see my own remarks as mere reflections based on previous reading.
One remarkable by John R Searle in his book The Mystery of Consciousness is that 'the simulation of mental states is no more a mental state than the simulation of an explosion is an explosion is in itself an explosion.' I think that this point is pertinent because there is a danger of the near death experiences being viewed in a literal way. Of course I am not wishing to undermine the value of the experiences for individuals. They often have seem of profound and transformative value for the individuals but based on my reading of Jung I would see them as symbolic primarily.
Edward F Bruner in his discussion of the creative persona has pointed to the creation of experience of light in connection with interaction between the left and brain hemispheres. I think the reason why this is importance of possible neurology involved in possible brain processes.
While having a limited knowledge of neuroscience the reason for pointing to this is that it does seem central to the experience of near death survivors is light, although some accounts include dead relatives which suggests that the experiences is more than a creation of light imagery.
This leads back to the possibility of placing the experiences in the level of deep dream states at least. Of course, as mediators are aware breath has a profound impact upon higher states of consciousness. Perhaps this involves the trigger of alpha and theta states of consciousness.
One thing I will also say, before closing for now, is that it is interesting that the tunnel of light features in those who return from death, suggesting possible heavenly journeys but not of any descending to hellish regions. But of course, the history of visionaries, including William Blake, and many others, especially those diagnosed as schizophrenic, have known infernal as well as heavenly regions, which could lead to the need to frame the near death experiences within the context of the larger picture of visionary and other altered states of consciousness.