Original Post
The NYT published a very interesting op-ed yesterday regarding the meaning of an announcement earlier this year by Swiss scientists that electrical stimulation of the brain can create the sensation of a "shadow person" [1]. Here are some snips from the op-ed: Ghosts in the Machine
Quote:Here's a link to Blanke's report: Induction of an illusory shadow person. And here's more information on the angular gyrus. And here are a few links to Blanke's related research into "Out of Body" experience: [2], [3], [4], [5]. Does Blanke's research mark the beginning of a conclusive end to the belief in ghosts or will our need to add meaning to unexplained phenomena perpetuate the notion? If it really boils down to "how one sees the world", what are the prospects for maintaining a mystical view of existence in light of the findings of this kind of materialist science?
THE human brain is, in surprising part, an appliance powered by electricity. It constantly generates about 12 watts of energy, enough to keep a flashlight glowing. It works by sending out electrical impulses — bursts of power running along the cellular wires of the nervous system — to stimulate muscles into motion or thought into being. ... So when scientists wrote in a recent issue of the journal Nature that they could induce phantom effects — the sensation of being haunted by a shadowy figure — by stimulating the brain with electricity, it made perfect neurological sense. One could even argue that the existence of such sensations explains away the so-called supernatural. In fact, as The Times reported, the researchers promptly concluded that ghosts are mere “bodily delusions,” electrical misfirings and nothing more. The report does look like a kind of proof — albeit very small proof, as this was a study of two people — if one happens already to believe that ghosts are no more than biological quirks. But what’s fascinating is that it can also look like proof that ghosts are real entities, to those inclined to believe as much. And so the findings also present a case study in two very different perspectives. ... The theories developed by Lodge and his colleagues dovetail rather neatly with the electricity-produced hauntings that Olaf Blanke, a Swiss neuroscientist, reports in Nature. For example, he used an implanted electrode to send a current into a region of the brain called the angular gyrus. The test was focused on language processing. But as a side effect, one of the test subjects nervously reported sensing another person in bed with her, silent and shadowy. Her creepy companion came and went with the ebb and flow of current. It would be compelling — and more convincing — if the same result could be exhibited in a few more subjects. But Dr. Blanke believes that even this one subject’s experience serves as an example of how we may mistake errant signals in the brain for something more. Humans tend, he points out, to seek explanation, to impose meaning on events that may have none. The pure rationalists among us suggest that our need to add meaning to a basic, biological existence easily accounts for the way we organize religions and find evidence of otherworldly powers in the stuff of everyday life. The nonpurists suggest a different conclusion: willful scientific blindness. And there’s no reason Dr. Blanke’s study can’t support their theories of the paranormal. Perhaps his experimental electric current simply mimics the work of an equally powerful spirit. Much of the psychical research done today applies similar principles: brain-imaging machines highlight parts of the brain that respond to psychic phenomena, while other devices are used to search for infrared radiation or increased electrical activity in haunted houses. ... ... And how often, James wondered rhetorically, had such efforts stopped people from seeing ghosts and believing in supernatural powers? Because in the end, of course, the conclusion has nothing to do with science at all and everything to do with how one sees the world. I suspect that we’ll dwell forever in the haunted landscape of our beliefs. To many people it’s a world more interesting — bigger, stranger, more mysterious — than the one offered by science. Why choose instead to be creatures of chemical impulse and electrical twitch? We would rather gamble on even a tiny, electrical spark of a chance that we are something more.
