Any material explanation that’s been attempted doesn’t account for some of the things that happen in NDE. These people are as sane and rational as anyone else. The impacts of these experiences are vastly positive. About 90 percent of people who have an NDE find it a pleasant experience, and many of them come back happier and with a strong sense of purpose.
Tricia, a community college English teacher, suffered cardiac arrest during surgery following an automobile accident and experienced an extensive near-death experience, with a veridical element and with numerous aftereffects. Veridical perceptions are observations a person remembers from an out-of-body experience that can be independently verified. These are things that they could not have known through ordinary means.