It’s called a near-death experience, but the emphasis is on “near.” The heart stops, you feel yourself float up and out of your body. You glide toward the entrance of a tunnel, and a searing bright light envelops your field of vision.It could be the afterlife, as many people who have come close to dying have asserted. But a new study says it might well be a show created by the brain, which is still very much alive. When the heart stops, neurons in the brain appeared to communicate at an even...
