Well, what you are describing could well be vagus nerve dysfunction. Most of the links that I can come up with are pretty 'sciencey', but you should be able to make a bit of sense out of them anyway:
emedicine.medscape.com/article/1875813-overview/www.britannica.com/science/vagus-nerveDemyelination of any nerve can happen with Lyme, as it attacks that protective sheath of the nerve (myelin sheath), which causes mixed signal, and wrong signals to be passed from the brain to other points in the body.