 Reynolds' near-death experience has been put forward as evidence supporting an afterlife by proponents such as cardiologist Michael Sabom in his book "Light and Death".According to Sabom, Reynold's experience occurred during a period in which her brain had completely ceased to function.Critics say that the amount of time which Reynolds was 'flatlined' is generally misrepresented, and suggest that her NDE occurred while under general anaesthesia when the brain was still active, hours before Reynolds underwent hypothermic cardiac arrest.