It is routinely probed and dissected until a portion of nerve is exposed at our institute, with corresponding contraction of the cricothyroid muscle
during stimulation used as an indicator of an intact EBSLN.
EBSLN monitoring was achieved by placing and suturing needle electrodes into the cricothyroid muscle
Activation of the cricothyroid muscle
results in elongation, stiffening, and thinning of the vocal cords during phonation and plays an important role in controlling vocal fundamental frequency.
Sundberg identifies two kinds of vibrato production, one associated with the action of the cricothyroid muscle
, and the other caused by undulations of subglottic pressure.
Laryngeal electromyography detected a 20% decrease in recruitment in the right cricothyroid muscle
The cricothyroid muscle
(CT) is also activated during inspiration, tensing the vocal folds.
I suspect that women are using less cricothyroid muscle
activation to keep the average pitch lower and more thyroarytenoid activation to increase harmonic energy.
Sundberg's research indicated the neural control system, respiration, subglottic pressure controls, laryngeal muscle movement, and particularly cricothyroid muscle
activity in regard to adjustments in frequency and amplitude were all involved in register management.
25) The vocalis or thyroarytenoid muscle activity is dominant over cricothyroid muscle
activity, resulting in strong glottal adduction with the vocal folds closed for a larger percentage of the vibratory phase than for classical singing.
8) Western culture uses a vibrato that requires the cricothyroid muscle
in the larynx to produce pulsating contractions.
The larynx tilts toward the side of the weakness on lengthening because the cricothyroid muscle
on the normal side pulls the thyroid cartilage anteriorly (forward) and down toward the cricoid cartilage; the paretic cricothyroid muscle
is weak and pulls the thyroid cartilage to a lesser degree, resulting in tilting of the larynx towards the side of the weak superior laryngeal nerve and cricothyroid muscle
1) The cricothyroid muscle
controls pitch in phonation by stretching the vocal folds (thyroarytenoids).
6) A higher ratio of thyroarytenoid muscle activation to cricothyroid muscle
activation during and after use of the semi-occluded postures.