Possible explanation for near death experiences:
Electrical readings from seven patients who died in hospital suggest that the brain undergoes a surge of activity at the moment of death, according to a study just published in the Journal of Palliative Medicine. […]
This is not the first time these have been noticed, but previous reports were single cases and the electrical surges were explained away as due to electrical interference from other sources. In these new cases, the doctors could be pretty confident that previously suggested sources of interference weren’t present.
Instead, they suggest that the surge was due to ‘anoxic depolarisation’ – a process where the lack of oxygen destabilises the electrical balance of the neurons leading to one last cascade of activity.