I was actually supporting your theory about the amygdala. I only added the diaphragm in it because thats what I - and other experts - believe is a important cause of stuttering. Why o why I am that convinced? Well think again: I am free of stammer for more then 10 years! But I am happy if your expert with this theory is helping you getting rid of your stammer. The fact is: I am stutterfree. And with me thousands of people as well. Freedom, thats the feeling every day for me