by Jessie Roberts
Ed Yong reports on a study that may help explain the phenomenon of near-death experiences:
[Neuroscientist Jimo] Borjigin discovered that rats show an unexpected pattern of brain activity immediately after cardiac arrest. With neither breath nor heartbeats, these rodents were clinically dead but for at least 30 seconds, their brains showed several signals of conscious thought, and strong signals to boot. This suggests that our final journey into permanent unconsciousness may actually involve a brief state of heightened consciousness.
Although the experiments were done in rats, Borjigin thinks they have implications for the near-death experiences (NDEs) reported by one in five people who are resuscitated after their hearts stop. Although they were unconscious, unresponsive and clinically dead at the time, they come back with stories of bright lights, “realer than real” memories, and meetings with people they knew. Some scientists have dismissed these accounts outright. Others have taken NDEs as proof of a religious afterlife or a consciousness that lives on outside the body, as popularised in a recent bestseller of dubious provenance.
But Borjigin’s research suggests that these experiences could just be a natural product of a dying brain. That doesn’t make them any less real, but it does root them in the natural world, without the need for a “super-” prefix.
(Photo by Flickr user Matt From London)