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Tuesday, October 13, 2009

Brain Has Electrical Surge Just Before Death

In the moments before death, the human brain surges with activity, which some researchers believe may be related to near-death experiences (NDEs).

Seven patients dying from critical illnesses recently were studied by doctors at George Washington University. Moments before death, the patients experienced a burst in brain wave activity, with the spikes occurring at the same time before death and at comparable intensity and duration.

Writing in the October issue of the Journal of Palliative Medicine, the doctors theorize that the brain surges may be tied to widely reported near-death experiences which typically involve spiritual or religious attributes.

According to Discovery News:
At first, doctors thought the electrical surges picked up by electroencephalographs were caused by other machines or cell phones in the rooms of dying patients, lead author Lakhmir Chawla told Discovery News.

"We thought 'Hey, that was odd. What was that?'" Chawla said. "We thought there was a cell phone or a machine on in the room that created this anomaly. But then we started removing things, turning off cell phones and machines, and we saw it was still happening."

The doctors believe they are seeing the brain's neurons discharge as they lose oxygen from lack of blood pressure.

"All the neurons are connected together and when they lose oxygen, their ability to maintain electrical potential goes away," Chawla said. "I think when people lose all their blood flow, their neurons all fire in very close proximity and you get a big domino effect. We think this could explain the spike."
Brain researcher Kevin Nelson at the University of Kentucky, who studies near-death experiences, said it's well known that when the brain is abruptly deprived of blood flow it gives off a burst of high voltage energy. "It's unlikely with conventional brain wave recordings during death that they're going to see something that hasn't been seen already." he said.

Chawla and colleagues want to follow up their case study with a larger pool of patients outfitted with more sophisticated brain activity sensors.

Click here for the Discovery News article.

1 comment:

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