The effects of dynamic laryngeal movements on pitch control.
Am J Otolaryngol
; 36(5): 660-5, 2015.
Article
en En
| MEDLINE
| ID: mdl-26095529
ABSTRACT
BACKGROUND AND OBJECTIVES:
Extralaryngeal structures have been known to not only play an important role in swallowing, but also have a significant influence on the voice during phonation. The aim of this study is to evaluate the effect of dynamic laryngeal movements on pitch control. SUBJECTS ANDMETHODS:
Videofluoroscopic examinations were analyzed. To accurately analyze the sequence of these movements, the recorded images were digitized using a computer program. The moving distances of the hyoid bone, thyroid cartilage, and cricoid cartilage were analyzed, and they were compared to the cricothyroid distance during pitch elevation.RESULTS:
The vertical movements of the hyoid bone, and cricoid and thyroid cartilages had an impact on the increase in the pitch with a decrease in the cricothyroid distance. All Ad-R(2) values for distance of the hyoid bone, and cricoid and thyroid cartilages were above 0.9, which showed a higher explanatory power than the cricothyroid distance, showing an Ad-R(2) value of 0.4.CONCLUSIONS:
Upward movements of the larynx had a more dominant effect on pitch elevation than the cricothyroid distance. We suspect that the pitch is more affected by the antero-vertical movements of the larynx than the horizontal movement by cricothyroid muscle in human study.
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Pliegues Vocales
/
Voz
/
Calidad de la Voz
/
Deglución
/
Músculos Laríngeos
/
Contracción Muscular
Límite:
Adult
/
Humans
/
Male
/
Middle aged
Idioma:
En
Año:
2015
Tipo del documento:
Article