Perhaps we do get last look back at life upon death

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”While monitoring a patient for seizure activities, a patient had a heart attack and died giving the Neuroscientists a recording of brain activity during and following death.

“We measured 900 seconds of brain activity around the time of death and set a specific focus to investigate what happened in the 30 seconds before and after the heart stopped beating,” said Dr Ajmal Zemmar, a neurosurgeon at the University of Louisville, US, who organized the study.

“Just before and after the heart stopped working, we saw changes in a specific band of neural oscillations. Through generating oscillations involved in memory retrieval, the brain may be playing a last recall of important life events just before we die, similar to the ones reported in near-death experiences,” Zemmar speculated.”

The first question that comes to mind for me would be, by what mechanism does the brain “know” that death is occurring and then — and for what reason —- trigger such memories?