Figure 7 - Stimulation of right internal branch of superior laryngeal nerve.

Compound muscle action potentials obtained from (a,b) ipsilateral and (c,d) contralateral thyroarytenoid muscles at (a,c) 0.5 minimal alveolar concentration and (b,d) 1.0 minimal alveolar concentration. d: Note loss of evoked contralateral responses at 1.0. (Source: Sasaki CT, Jassin B, Kim YH, Hundal J, Rosenblatt W, Ross DA. Central facilitation of glottic closure reflex. Ann Otol Rhino Laryngol 2003;112 (4): 293-297, with permission from Annals Publishing Co.)