Doctor Jeffrey Long, in his new book Evidence of the Afterlife: The Science of Near-Death Experiences, claims that near-death experiences cannot be culturally determined, because they transcend age and culture.
From this he concludes that they must be evidence of an afterlife.
Many years ago, I read a great deal about accounts of near-death experiences. The common elements (the ones which transcend age and culture) are a moving through a dark tunnel toward a bright light, being surrounded by (usually deceased) family members and (according to some sources), a vague buzzing noise that suddenly ceases.
I am amazed that no one seems to conclude that these experiences are influenced by long-buried memories of our birth. We start in a dark place, surrounded by the sound of our mother's heartbeat and intestinal gurglings. We move through a dark tunnel and emerge into a bright light, surrounded by family members.
Of course the images transcend culture and age. Being born is a universal human experience.