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Figure 1. A) Laryngeal twitch can be palpated with a finger placed on the posterior aspect of the larynx during recurrent laryngeal nerve (RLN) or vagal stimulation. B) Stimulator probe points to the left RLN in the photo. Credit: Copyright 2016 The American Laryngological, Rhinological and Otological Society, Inc.

Figure 1. A) Laryngeal twitch can be palpated with a finger placed on the posterior aspect of the larynx during recurrent laryngeal nerve (RLN) or vagal stimulation. B) Stimulator probe points to the left RLN in the photo. Credit: Copyright 2016 The American Laryngological, Rhinological and Otological Society, Inc.

Figure 1. A) Laryngeal twitch can be palpated with a finger placed on the posterior aspect of the larynx during recurrent laryngeal nerve (RLN) or vagal stimulation. B) Stimulator probe points to the left RLN in the photo.
Credit: Copyright 2016 The American Laryngological, Rhinological and Otological Society, Inc.

ENTtoday - https://www.enttoday.org/article/correlation-emg-waveforms-muscle-activation-intraoperative-neural-monitoring/ent_pg7a-2/