Brain activity continues after cardiac arrest. Data on a dying human brain has been captured for the first time.
What do we feel when we die? What do we see? What’s going on ? The moment of death remains a mystery, but a team of scientists managed to capture a recording of a man’s brain activity just before, during and just after his death.
An unpublished recording that allows you to learn more about this passage between life and death. The researchers published the findings of their work on Frontiers in Aging Neuroscience on Tuesday, February 22, in what they call “data providing the first evidence of dying human brain in a non-experimental, real-life acute care clinical setting.”
And for them, the passage towards death would resemble a dream, in any case the data show the same physical functioning as when one dreams.
Near-death experiences justified?
There are many near-death experiences whose stories describe hallucinations, images of past life, a sight outside one’s body or even a halo of light…
But these phenomena reported by resuscitated people cannot serve as scientific evidence because they are subjective.
But that does not prevent scientists from having often studied experiments from this angle in an attempt to understand what is happening in the human brain when life leaves it.
The researchers say it themselves: “The neurophysiological signature of this phenomenon is unclear. It is hypothesized that the brain may generate memory replay in this ‘unconscious’ phase with increased oscillatory activity .”
Experiments on rodents
Experimental studies have been carried out on rodents and demonstrate brain activity even before death and after death.
As if the brain was preparing for death and continuing to function right after, even when the blood stops circulating, as Futura Sciences reports.
The electroencephalogram accidentally records the death of a man
But so far the experiments could not be done only on rodents. But a recording due to chance and taken during the death of a man reinforces the work on rodents.
Indeed, an 87-year-old man, hospitalized in emergency after a fall was placed after surgery under an electroencephalogram because he had developed epileptic seizures following his operation.
The American neuroscientists from Louisville who report the case, explain that the man is died of a heart attack suddenly while plugged in.
As a result, his brain activity could be recorded a few minutes before his death, during and a few minutes after his death.
the first recording of brain activity at the time of death could thus be carried out on a human being.
The 15 minutes surrounding death could be studied and it turns out that 30 seconds before death and 30 seconds after heart failure, Gamma brain waves are significantly active.
Exactly like when we dreamthat we remember memories or that we meditate.
A result to put into perspective
Tremendous insight for scientists into what happens in the brain at the time of death that confirms rodent tests.
However, this is an isolated case. In addition, the patient presented with seizure disorders, which may distort the results.