http://www.time.com/time/health/article/0,8599,1694723,00.html

More evidence that the brain and the gut form a coherent unity: “Although more complex assertions may get analyzed in so-called “higher” areas of the brain, all seem to get their final stamp of “belief” or disbelief in “primitive” locales traditionally associated with emotions or taste and odor.” (read primitive as ‘anciently evolved’).