Now this looks like a very cool experiment that I am interested in. Maybe you, too. Apparently Vagus Nerve Stimulation works really well for calming anxiety, phobias, fears, etc. There is apparently a very simple way to carry this out (without using invasive techniques. Basically you put a cold pack on your face and hold your breath for a minute. It also is touted as a good way to reduce inflammation.
Here is a link to how to perform the technique:
http://www.emoclear.com/thedivereflex.htmHere is a link to Dr. Ayer's website (the webcache in any case, I am blocked from going to the site here at work):
http://webcache.googleusercontent.com/search?q=cache:an6vFUQghE8J:coolinginflammation.blogspot.com/2009/09/vagus-nerve-controls-gut-inflammation.html+vagal+nerve+stimulation+dive+reflex&cd=8&hl=en&ct=clnk&gl=us&lr=lang_fr|lang_en&source=www.google.com