Dr Koch used Sir Francis’ anecdote to explain how NDE’s are “not fancy flights of the imagination”.
He said in the Scientific American: “They share broad commonalities—becoming pain-free, seeing a bright light at the end of a tunnel and other visual phenomena, detaching from one’s body and floating above it, or even flying off into space (out-of-body experiences).
“They might include meeting loved ones, living or dead, or spiritual beings such as angels; a Proustian recollection or even review of lifetime memories, both good and bad (“my life flashed in front of my eyes”); or a distorted sense of time and space.
“There are some underlying physiological explanations for these perceptions, such as progressively narrowing tunnel vision. Reduced blood flow to the visual periphery of the retina means vision loss occurs there first.”