Figure 21 - Cricothyroid EMG (upper tracing) and phrenic EMG (lower tracing).
From the following article
Anatomy and development and physiology of the larynx
Clarence T. Sasaki
GI Motility online (2006)
doi:10.1038/gimo7
a: Quiet breathing. b: Expiratory dyspnea. c: Inspiratory dyspnea. The cricothyroid, like the posterior cricoarytenoid, appears to be an inspiratory muscle. (Source: Sasaki45 with permission from Lippincott, Williams and Wilkins.)
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