I continue to refer to the article by Greyson:
Individuals who have had nde’s are “convinced that during the nde they temporarily separated from their physical bodies.” greyson points out that “the idea that mind and brain are not identical is not inherently unscientific. . . . although most psychologists and neuroscientists accept the reductionistic model that brain produces mind, or indeed is the mind, several features of nde’s call into question whether materialist reductionism will ever provide a full explanation of them.”