The papal visit is a time for ritual, prayer, and meditation. Research has shown that such activities – even outside a religious context – change our brains for the better. Andrew B. Newberg, a neuroscientist and director of research at Jefferson University Hospitals’ Myrna Brind Center of Integrative Medicine, specializes in the neurological study of religious and spiritual experiences, an emerging field known as neurotheology. He has taken hundreds of brain scans of nuns in…