What's the Deal With the Bright Light You See Before Dying? By Brendan I. Koerner October 1, 2002
It's the afterlife, stupid! OK, that's if you want to believe that you, or more to the point, your soul, will go somewhere else once you kick the proverbial bucket. But science has some more down-to-earth explanations for that shiny light beckoning those close to death.
...Many researchers ascribe the glow to the effects of anoxia, or oxygen deprivation, which can affect the optic nerves. Others suspect that trauma to the right temporal lobe, the area of the brain responsible for perception, can cause the senses to malfunction...
A third theory holds that the brain releases massive amounts of endorphins, or natural painkillers, when the body is gravely injured. Those endorphins may "override" the optic nerves, causing the victim to see a peaceful glow... This endorphin-induced serenity can be crucial to warding off lethal shock, thus giving the person better odds of survival.
It has also been suggested that some bright-light glimpsers neither gaze at eternity nor experience unusual neurological activity. Instead, they may simply mistake the high-powered operating room lights as something a tad more mystical.
But here's a real kicker:
...In Western societies, the bright light is often accompanied by visions of deceased relatives, idyllic gardens, and a convivial bearded man in flowing white robes—all standard images of the Christian heaven. Dying Hindus in India, by contrast, typically picture the afterlife as a Kafkaesque bureaucratic office. Fading Micronesians have been known to describe a bustling, skyscraper-filled metropolis.
Personally, my vision of heaven is a cartoon afterlife where I'd be given an indestructible, malleable ink and paint body. I just haven't decided yet whether I'd prefer a Warner Bros. or a Hanna-Barbera production to spend eternity in.
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