'Near death' has biological basis, this is what the Prophet Rael has been saying all along while some people are trying to use this phenomenon as a proof of a bright life after death.
People who have had near death experiences commonly report being surrounded by a bright light or gazing down on themselves in an operating theatre.
A recent study confirms the Prophet Rael’s teachings as it suggests that near death experiences have a biological explanation rather than a spiritual one.

Kevin Nelson of the University of Kentucky, Lexington, USA, who led that study, compared 55 people who had had near death experiences and 55 who had not. His team found out that those with near death experiences were more likely to have less clearly separated boundaries between sleeping and waking. This US team said the same parts of the brain are activated when people dream as in near death experiences.
Many of these sensations are also common to experiences of being in the dream state, or rapid eye movement (REM), stage of sleep, the researchers said.