A study revealed that when you die you still know that you’re dead.
Scientists from United States has discovered that the mind still works after the body shows no sign of life and reveal people have heard their own death announced by medics or any attending physicians.
Several theories about after death includes “seeing light at the end of a tunnel”, while others claim to have floated above their body, watching as medics save their lives, but the reality of near-death situation has always been debated.
The New York-based scientists have discovered that a person’s consciousness continues to work after the body has stopped showing signs of life – meaning they have awareness of their own death.
In the film “Flatliners,” a group of young doctors embark on a dangerous experiment by taking turns to chemically induce their heart to stop and flatline to find out exactly what happens in the afterlife.
The core question in the film has directed a team from New York University Langone School of Medicine to investigate this “phenomenon” via a twin studies in Europe and the US of people who have suffered cardiac arrest and ‘come back’ to life, in the largest study of its kind.
According to study author Dr Sam Parnia ‘they’ll describe watching doctors and nurses working and they’ll describe having awareness of full conversations, of visual things that were going on, that would otherwise not be known to them.”
Dr. Parnia said these recollections were then verified by medical and nursing staff who reported their patients, who were technically dead, could remember details of what they were saying.
Also, in a separate study, the brain activity of dying rats may have shed light on the mystery of human near death experiences.
In 2013, researchers at the University of Michigan back analyzed the electrical signals in the brains of nine anesthetized rats having an induced cardiac arrest.
They observed activity patterns associated with ‘a hyper-alerted state’ shortly after clinical death.
The study’s authors said near death experiences (NDEs) were reported by 20 per cent of cardiac arrest survivors.
People often claim they are evidence of an afterlife or the separation of the body and the soul.
Medically speaking, doctors pointed death based on when the heart no longer beats, which then immediately cuts off blood supply to the brain.
“Technically, that’s how you get the time of death – it’s all based on the moment when the heart stops,” explained Dr. Parnia.
“Once that happens, blood no longer circulates to the brain, which means brain function halts almost instantaneously,” he explained.
“You lose all your brain stem reflexes – your gag reflex, your pupil reflex, all that is gone.”
Furthermore, brain’s cerebral cortex – which is responsible for thinking and processing information from the five senses – also instantly flatlines, says Dr Parnia.
This means that within 2 to 20 seconds, no brainwaves will be detected on an electric monitor.
This sparks a chain reaction of cellular processes that will result in the death of brain cells. However, this can take hours after the heart has stopped, he explained.
And performing cardiopulmonary resuscitation (CPR) that hasn’t successfully revived a patient can still result in sending some blood to the brain – about 15 percent of what it requires to function normally.
“But brain cell death is still happening, just at a slightly slower rate,” Dr. Parnia added.