Newberg's scans have also shown the ways in which religious practices, like meditation, can help shape a brain. Newberg describes one study in which he worked with older individuals who were experiencing memory problems. Newberg took scans of their brains, then taught them a mantra-based type of meditation and asked them to practice that meditation 12 minutes a day for eight weeks. At the end of the eight weeks, they came back for another scan, and Newberg found some dramatic differences.
"We found some very significant and profound changes in their brain just at rest, particularly in the areas of the brain that help us to focus our mind and to focus our attention," he says.