: A murky, primitive state of initial consciousness .
The book chronicles Alexander’s transformation from a skeptical, academic neurosurgeon to a staunch believer in the afterlife following a week-long coma in 2008 caused by a rare case of E. coli bacterial meningitis.
: He details a journey through three distinct realms:
: Alexander describes his brain’s neocortex as "completely non-functional" during the coma, a detail he uses to argue that his vivid experiences could not have been hallucinations produced by the brain.
Dr. Eben Alexander’s Proof of Heaven: A Neurosurgeon's Journey into the Afterlife (2012) is a memoir that attempts to bridge the gap between materialist science and spiritual belief through the lens of a near-death experience (NDE).
Proof of Heaven: A Neurosurgeon's Journey Into the Afterlife