He has also a tic of phonation dating back to his fifteenth year.
Tics of phonation are often superadded to the gesticulations of variable chorea.
Phonation and respiration are implicated as well as articulation.
But the vocal cords are wedded in phonation, and by their attrition the node is formed.
The whole larynx, so far as phonation is concerned, may be said to exist ...