This novel study reviews the brains activity during and subsequent to zen meditation practices. In particular, they are identifying the effects of Zen meditation, a very simple posture and breath meditation practice, on activation and inhibition reactions in various regions of the brain.
Emory University Health Sciences Center (2004, June 17). Emory Researchers Study The Effects Of Zen Meditation On The Brain. ScienceDaily.
http://www.sciencedaily.com/releases/2004/06/040617081841.htm