Neurologists have long wondered whether a particular part of the brain can help explain a person’s experience of God. Stanley Koren and Michael Persinger, for example, famously developed the “God helmet,” a device that stimulated what they called “the God spot” and so induced its wearer to feel the presence of God. (Interestingly enough, the device had little effect on the popular atheist writer Richard Dawkins.) However, neuropsychologists Brick Johnstone and Bret Glass (both University of Missouri) challenge the plausibility of the “God spot,” arguing that spirituality involves many areas of the brain.This is quite interesting. The entire article is fascinating in it's implications and direction. It seems to suggest that no part of the mind colonizes religiosity or spirituality. I'm not certain one's religious persuasion is entirely cultural, though I have been open to the idea as suggested by an atheist friend of mine.
Of course, having two major parts of the brain that contribute to religiosity does strike me as quite appropriate. You should check it out for yourself.
For the rest of the article, Patheos/God Spot