This study examined a way to determine if that nerve was working properly:
http://www.ncbi.nlm.nih.gov/pubmed/22957532
This paper examines the nerve with EMG techniques:
http://www.eymj.org/Synapse/Data/PDF.../ymj-26-24.pdf
This also may explain other ways:
http://www.medhelp.org/posts/Respira...is/show/284429
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All truths are easy to understand once they are discovered; the point is to discover them.-- Galileo Galilei
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Weezie looking at petunias 8.25.2017
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