Jean also described hearing a voice of a “clearly mystical or unearthly origin” during the experience.
However, many medical experts believe there are natural explanations for the sights and sounds associated with near-death experiences.
NDEs might be explained by the brain scanning itself during a moment of trauma as a survival technique.
NDEs could also be explained by hallucinations triggered by a lack of oxygen reaching the brain.
According to Dr Sam Parnia, director of critical care and resuscitation research at NYU Langone School of Medicine in New York City, many NDEs are linked by similar experiences.