There is nothing paranormal about near-death experiences: how neuroscience can explain seeing bright lights, meeting the dead, or being convinced you are one of them.
Trends in Cognitive Sciences October 1, 2011 Dean Mobbs, Caroline Watt
About 3% of Americans report having had a near-death experience, typically involving a sense of the soul leaving the body, approaching a bright light, and entering a reality of overwhelming love and bliss. Contrary to popular belief, research suggests these experiences are not paranormal but rather result from normal brain function gone awry during a traumatic or sometimes harmless event.