This is Chapter 30 of the book "Did Man Create God?" It shows that spirituality is genetically hardwired into a specific part of the brain. A wide range of factors that influence temporal lobe function can produce hallucinations, paranormal, spiritual, mystical, and religious experiences. These factors include the electrical stimulation of the temporal lobes; spontaneous temporal lobe epileptic auras and seizures; trauma; the severe anoxia of near death, G-forces; psychedelic drugs; speaking in tongues; and many environmental stressors. Aberrant functioning can result in out-of-body sensations, depersonalization and derealization, features that are common in spiritual and mystical experiences. These spiritual experiences are recorded by the brain as of profound importance, meaningful, immensely joyous and of providing a sense of being connected to something greater than ourselves − the essence of spirituality. The temporolimbic system is our spiritual brain. Review:     Chapter 30 discusses temporal lobe epilepsy and how the temporal lobe of the brain is also activated by various psychedelic drugs that produce very convincing religious experiences. It is noteworthy that rational people, well aware in advance of the likelihood of induced "religious" experience, still insist that the induced religious experiences were real. This correlates with known or strongly suspected temporal lobe epilepsy in many founders of new religious sects.     John A. Frantz, MD, NASW (National Association of Science Writers) June 23, 2008