It’s possible that the reason I've never experienced a ghostly presence is that my temporal lobes aren't wired for it. It could well be that the main difference between skeptics (Susan Blackmore notwithstanding) and believers is the neural structure they were born with. But the question still remains: Are these people whose EMF-influenced brains alert them to “presences” picking up something real that the rest of us can’t pick up, or are they hallucinating? Here again, we must end with the Big Shrug, a statue of which is being erected on the lawn outside my office.
Mary Roach, Spook: Science Tackles the Afterlife
brain, ghosts, hallucinations, science