![]() The data haven't been published yet, but the researchers have been bringing a computer into the rooms of patients in cardiac arrest to deliver audio and visual stimulation during resuscitation. Parnia and his colleagues are now trying to explore this phenomenon in a systematic way. This was surprising, as the cerebral cortex typically shuts down within 2 to 20 seconds of losing oxygen. "They described full details of what is happening to them, and in one of those cases, we managed to confirm, for the first time, as happening during a course of up to 5 minutes," Parnia told Live Science. ![]() The findings were published in 2014 in the journal Resuscitation. One person had an actual verifiable memory - that person reported feeling he was hovering outside his body and accurately described events from his resuscitation, including the use of an automated external defibrillator (AED) and the presence of a bald medical professional who responded to a nurse's call for help. (Unlike in the movies, cardiac arrest patients are typically unconscious in the hospital for days or weeks after their resuscitation.) For instance, people who reported feeling that hostile beings were torturing them were probably undergoing a common hallucination that occurs when people are being brought out of sedation and having their breathing tubes removed.īut 10% of the people in the study had what sounded like classic near-death experiences, and two recalled seeing or hearing their own resuscitations. Some had memories that appeared to have originated from the intensive care unit (ICU) after the person's heartbeat had been re-established. Sam Parnia, director of critical care and resuscitation research at New York University Langone Medical Center, surveyed survivors of cardiac arrest and found that of the 140 interviewees, 46% had a sense of being conscious during the event. DMT is produced naturally in the mammalian brain, and a 2019 study found that, in rats at least, DMT levels rose during cardiac arrest.īut studying the moment of death in humans is challenging, and no one has conclusively shown the mechanism behind near-death experiences. A 2018 study in the journal Frontiers in Psychology found that near-death experiences share a lot of features with how people feel after taking the psychedelic drug N,N-Dimethyltryptamine (DMT). ![]() However, this doesn't necessarily prove that the experiences are mystical in nature it's also possible that brain activity and consciousness sometimes persist longer than expected after the heart stops. ![]() Near-death experiences have been studied, and there is some evidence that people may experience consciousness when doctors don't expect them to. ![]()
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