Religiously preoccupied individuals follow a cognitive strategy similar to reductionist thinking and OCD rigidity. Their beliefs tend to become limited to the object of their obsession and they may spend years morbidly ruminating on a few concepts or scruples and lose the overall context of their beliefs. The reductionist function likely involves several parts of the brain: inferior parietal lobe, superior temporal lobe, and parts of the frontal lobe. The left hemisphere seems to be more active in providing a reductionist analysis of the world. (D’Aquili, E.G.,and A. B. Newberg. The Mystical Mind. MN:Fortress, 1999)

The frontal lobes of the brain play a vital role in the processing of spiritual activities and religious beliefs. (Muramoto, O. “The role of the medial prefrontal cortex in human religious activity.” Medical Hypotheses. 62 (4):479-485, 2004. Azari, N.P., et al. “Neural correlates of religious experience.” European Journal of Neuroscience 13(8):1649-1652)