Dr. Andrew Newberg at Penn in Philadelphia has studied Franciscan (Catholic) nuns at his facility and found changes in their frontal lobes when meditating on a bible passage in an MRI. He has an extensive website: www.andrewnewberg.com and he has a CD at www.soundstrue.com. His focus is on God and the brain. ~ The finding from various researchers is that meditative practices, regardless of religious tradition (or none) change brain chemistry and change brain structure, particularly in the brain behind the forehead that is involved in both attention/focus and compassion.
For theological implications, I have been greatly blessed by the writings of contemporary Christian contemplatives such as Rev. Cynthia Bourgeault, Fr. Thomas Keating, and Br. Steindl-Rast. ~ "Be still and know that I am God" (Psalm 46)
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