An increase in the activity of neurological processes in the human brain during death was seen, contrary to the long-held belief that brain activity decreases during the phases of death.
The initial presumption that there is a drop in brain activity stems from the notion that cardiac arrest is followed by a loss of awareness, however many people who have had a near-death experience have suggested the contrary, and some animal studies have shown greater brain activity at the time of death.
In an experiment, a group of scientists led by Jimo Borjigin of the University of Michigan saw a considerable increase in the electrical activity of the rats' brains shortly before the cardiac arrest that preceded their demise.
The human brain has a similar pattern of activity prior to death, according to a research published in the Proceedings of the National Academy of Sciences.
The research, according to the " Big Think " website, involved 4 patients who were in a coma and passed away in the critical care unit at the University of Michigan Hospital. They were all using resuscitation equipment and had all had brain injury as a consequence of heart attacks in 2014.
The EEG data of patients attached to life-support devices was examined by Borjigin and her colleagues both before and after assistance was stopped in order to learn more about the brain at the time of death.
When the patients' life support systems were turned off, two of them had greater activity in their brain's neuronal processes.
Researchers speculate that this pattern of brain activity may be the reason why people who have had near-death experiences see a dazzling white light since the study shows that turning off life support causes an increase in electrical activity across the brain.
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