Near-Death Experiences Are Being Studied in Hospital ICUs. The Results Aren't What Skeptics Expected.
The standard explanation for near-death experiences is that they are a product of the dying brain — oxygen deprivation, neurotransmitter floods, the mind's last-ditch attempt to make sense of its own shutdown. It's a clean, materialist explanation, and for decades it was enough to stop the conversation.
The problem is that researchers have now spent twenty years trying to confirm this explanation in controlled hospital settings, and the data is not cooperating the way anyone expected.