People who’ve had a brush with death often report seeing and experiencing life-altering events on “the other side,” like a bright white light at the end of a long tunnel, or being reunited with lost relatives or beloved pets.
But despite the seemingly supernatural nature of these experiences, experts say that science can explain why they happen – and what’s really going on.
What are near-death experiences?
A near-death experience is a profound psychological event with mystical elements. It typically occurs in people close to death, or during situations of intense physical or emotional pain, but may also happen after heart attacks or traumatic brain injuries, or even during meditation and syncope (loss of consciousness due to a fall in blood pressure).
They’re surprisingly common, with a third of people who have come close to death reporting having experienced one.
Common characteristics people report are feelings of contentment, psychic detachment from the body (such as out-of-body experiences), rapid movement through a long dark tunnel, and entering a bright light.
Culture and age may also influence the kind of near-death experience people have.
For example, many Indians report meeting the Hindu king of the dead, Yamraj, while Americans often claim to have met Jesus. Children typically describe encountering friends and teachers “in the light”.
Most reported near-death experiences are positive, and have even helped in reducing death anxiety, affirming life, and increasing well-being.
Why do near-death experiences happen?
Neuroscientists Olaf Blanke and Sebastian Dieguez have proposed two types of near-death experiences.
Type one, which is associated with the brain’s left hemisphere, features an altered sense of time and impressions of flying.