Clawson keeps mentioning the enteric "brain". I did not remember learning about this part of the brain in my major (psychology). So I found a website that helped me out. It was informational so I thought I might share it with you all. http://www.psyking.net/id36.htm.

These might help also

http://en.wikipedia.org/wiki/Enteric_nervous_system

http://www.real-personal-growth.com/res_fixing/authors/resistchange.html

the last one was interesting and actually tied into what Clawson is talking about.