Some recent research is confirming what a lot of us have probably long suspected—there's a pretty reasonable scientific explanation for near-death experiences.
Recently, a host of studies has revealed potential underpinnings for all the elements of such experiences.
For instance, the feeling of being dead is not limited to near-death experiences—patients with Cotard or "walking corpse" syndrome hold the delusional belief that they are deceased. This disorder has occurred following trauma, such as during advanced stages of typhoid and multiple sclerosis, and has been linked with brain regions such as the parietal cortex and the prefrontal cortex—"the parietal cortex is typically involved in attentional processes, and the prefrontal cortex is involved in delusions observed in psychiatric conditions such as schizophrenia," Mobbs explains. Although the mechanism behind the syndrome remains unknown, one possible explanation is that patients are trying to make sense of the strange experiences they are having.
This story, by Charles Q. Choi, breaks down several common elements of near-death experiences the same way. But the fact that I found most interesting relates to who has "near-death" experiences. Turns out, it's not limited to people who are actually near death. Choi reports that a study of 58 patients who had had near-death experiences found that 30 of them weren't actually in danger of dying. They just thought they were.