What is "near-death experience"

alt. A sensation of detachment from one's body, the presence of a tunnel of light, the apparent viewing of one's own body from on high, and similar manifestations, experienced by people whose heart and brain have temporarily ceased to function n. A sensation of detachment from one's body, the presence of a tunnel of light, the apparent viewing of one's own body from on high, and similar manifestations, experienced by people whose heart and brain have temporarily ceased to function

n. the experience of being close to death but surviving

A near-death experience (NDE) is a personal experience associated with impending death, encompassing multiple possible sensations including detachment from the body, feelings of levitation, total serenity, security, warmth, the experience of absolute dissolution, and the presence of a light.

Explanatory models for the NDE can be divided into several broad categories, including psychological, physiological, and transcendental explanations. Research from neuroscience considers the NDE to be a hallucinatory state caused by various physiological and psychological factors.