How do prayer and meditation affect brain activity? Dr. Andrew Newberg, MD, is the Director of Research at the Myrna Brind Center for Integrative Medicine at Thomson Jefferson University Hospital and Medical College, and he has studied the neuroscientific effect of religious and spiritual experiences for decades.
In a video that recently aired on "Through the Wormhole" narrated by Morgan Freeman on the TV channel Science, Dr. Newberg explains that to study the effect of meditation and prayer on the brain, he injects his subjects with a harmless radioactive dye while they are deep in prayer / meditation. The dye migrates to the parts of the brain where the blood flow is the strongest, i.e,. to the most active part of the brain.
This is the intro to an interesting article about prayer and meditation, complete with charts and a video, too.
See "Link to External Source Article" below to read further.
And while you're there, you'll also enjoy a slide show highlighting some of "America's Most Iconic Prayers."
Please see TruthBooks topical studies on both Prayer and Meditation