If consciousness is just the workings of neurons and synapses, how do we
explain the phenomenon of near-death experience? By some accounts,
about 3% of the U.S. population has had one: an out-of-body experience
often characterized by remarkable visions and feelings of peace and joy,
all while the physical body is close to death. To skeptics, there are
more plausible, natural explanations, like oxygen deprivation. Is the
prospect of an existence after death “real” and provable by science, or a
construct of wishful thinking about our own mortality?
Source.