Good survey DHM.
I never used an electric toothbrush. But on the subject of over stimulation -- I have a theory for my situation at least. I live alone. There were days at a time when I didn't talk with anyone during the intitial recovery period. In otherwords, I was not using my face muscles and nerves as most people normally do -- talking. Instead, I was using face exercises from the Palsy website which were exagerated movements -- not movements you would normally do -- or at least not without other counter movements like talking. I believe that fed incorrect information to my nerves.
As far as the affected muscles (hope I get the spelling right) Orbicularis oculi and oris, three Levator, both depressors, Proceous, and a strong interference from the Platysme.
As to the nerves (which by the way was the first time I saw a nerve chart like that -- thank you), I think the Brancial and the Visceral Nerves. It's really hard to tell.
By the way, I have my second round of Botox next Friday. I really could tell the difference when the first round wore off. How are you doing? Simon (chambo)? Debbie (oHIo)? How are you both doing?
David