Near-death experience: arising from the borderlands of consciousness in crisis

摘要: Brain activity explains the essential features of near-death experience, including perceptions envelopment by light, out-of-body, and meeting deceased loved ones or spiritual beings. To achieve their fullest expression, such experiences require a confluence events draw upon more than single physiological biochemical system, one anatomical structure. During impaired cerebral blood flow from syncope cardiac arrest that commonly precedes near-death, boundary between consciousness unconsciousness is often indistinct person may enter borderland be far aware appreciated others. Consciousness can also come go if rises falls across crucial threshold. crisis brain's prime biologic purpose to keep itself alive lies at heart many inextricably binds them primal brain. ischemia disrupt balance conscious states leading brainstem blend rapid eye movement (REM) waking into another during near-death. Evidence converges points support this notion, observation majority people with experience possess brains predisposed fusing REM an unfamiliar reality, are as likely have out-of-body while blending they