The role of vertical larynx movement in vocal frequency (F0) change has attracted the attention of many researchers. Recently, Hirai, Honda, Fujimoto, and Shimada(1994)proposed a mechanism of F0 control by vertical larynx movement based on the measurement of magnetic resonance images(MRI). In F0 changes, the larynx moves vertically along the cervical spine, which displays anterior convexity (lordosis) at the level of the larynx. Therefore, the vertical larynx movement results in the rotation of the cricoid cartilage and vocal fold tension changes. The present study reexamines the above mechanism based on a qualitative analysis of midsagittal MRI data using three male subjects with evident cervical lordosis. Tracings of the jaw, hyoid bone, laryngeal cartilage, and cervical spine were compared in high and low F0 ranges. In the high F0 range, the hyoid bone moved horizontally while the larynx height remained relatively constant. In the low F0 range, the entire larynx moved vertically, and the cricoid cartilage rotated along the cervical lordosis. These results indicate that the vertical movement of the larynx comprises an effective F0 lowering mechanism, and suggestthat the human morphologies of low larynx position and spinal curvature contribute to voluntary use of the vocal function.
Arnold, G.E. (1961). Physiology and pathology of the cricothyroid muscle . Laryngoscope, 71, 687 - 753.
2.
Asmussen, E. (1960). The weight-carrying function of the human spine . Acta Orthopaedica Scandinavica,29,276 - 290.
3.
Atkinson, J.E. (1978). Correlation analysis of the physiological features controlling fundamental frequency. Journal of the Acoustical Society of America ,63,211-222.
4.
Baer, T., Gore, G., Gracco, L.C., & Nye, P.W.( 1991). Analysis of vocal tract shape and dimensions using magnetic resonance imaging: Vowels. Journal of the Acoustical Society of America,90, 799 - 828.
5.
Chiba,T., & Kajiyama, M. (1941). The vowel: Its nature and structure. Tokyo: Kaiseikan.
6.
Crelin, E.S. (1973). Functional anatomy of the newborn. New Haven: Yale University Press.
7.
Curry, R. (1937). The mechanism of pitch change in the voice. Journal of Physiology,91,254- 258.
Dubrul, E.L. (1958). Evolution of the speech apparatus. Springfield: IL: Charles C. Thomas.
10.
Erickson, D. (1993). Laryngeal muscle activity in connection with Thai tones. Annual Bulletin of the Research Institute of Logopedics and Phoniatrics,27, 135-149.
11.
Ewan, W., & Krones, R. (1974). Measuring larynx movement using the thyroumbrometer . Journal of Phonetics, 2, 327-335.
12.
Faaborg-Anderson, K., & Sonninen, A. (1960). The function of the extrinsic laryngeal muscles at different pitch. Acta Otolaryngologica ,51,89-93.
13.
Fink, B.R.( 1975). The human larynx: A functional study. New York: Raven Press.
14.
Gandour, J., & Maddieson, I. (1976). Measuring larynx movement in Standard Thai using the cricothyrometer. Phonetica, 33, 241-267.
15.
Hallé, P.A. (1994). Evidence for tone-specific activity of the sternohyoid muscle in Modern Standard Chinese. Language and Speech, 37, 103-123.
16.
Hirai, H., Honda, K.,Fujimoto,I., & Shimada, Y.( 1994). Analysis of magnetic resonance images on the physiological mechanisms of fundamental frequency control. Journal of the Acoustical Society of Japan,50,296- 304. (in Japanese).
17.
Honda, K. (1983). Relationship between pitch control and vowel articulation . In D. M. Bless & J. H. Abbs (Eds.), Vocal fold physiology (pp.286-297), San Diego: College-Hill Press.
18.
Honda, K. (1985). Variability analysis of laryngeal muscle activities . In R. Schearer & I. Titze (Eds.), Vocal fold physiology (pp. 127-137). Denver: Denver Center for Performing Arts.
19.
Honda, K. (1995). Laryngeal and extralaryngeal mechanisms of F0 control. In F. Bell-Berti & L.J. Raphael (Eds.), Producing speech: Contemporary issues (pp.215-232). New York: American Institute of Physics.
20.
Honda, K., Hirai, H., Estill, J., & Tokhura,Y. (1995). Contribution of vocal tract shape to voice quality: MRI data and articulatory modeling. In O. Fujimura & M. Hirano (Eds.), Vocal fold physiology, Voice quality control (pp.23-38). San Diego: Singular Publishing Group.
21.
Kakita, Y., & Hiki, S. (1976). Investigation of laryngeal control in speech by use of thyrometer. Journal of the Acoustical Society of America ,59,669 - 674.
22.
Kenyon, E.L. (1927). Relation of oral articulative movements of speech and of extrinsic laryngeal musculature in general to function of vocal cord . Archives of Otolaryngology ,5,481-501.
23.
Lindqvist, J., Sawashima, M., & Hirose, H. (1973). An investigation of the vertical movement of the larynx in a Swedish speaker. Annual Bulletin of the Research Institute of Logopedics and Phoniatrics, 7, 27-34.
24.
Moeller, J., & Fischer, J.F. (1904). Observation on the action of the cricothyroideus and thyroarytenoideus internus. Annals of Otology, Rhinology, and Laryngology, 13, 42-46.
25.
Negus, V.E. (1935). The mechanism of phonation. Acta Otolaryngologica, 22, 393-419.
26.
Niimi,S., Horiguchi,S., & Kobayashi, N. (1991). F0 raising role of the sternothyroid muscle: An electromyographic study of two tenors. In J. Gauffin & B. Hammerberg (Eds.), Vocal fold physiology (pp.183-188). San Diego: Singular Publishing.
27.
Okajima, K., & Taniguchi, T. (1959). Okajima Anatomie, vol.1, Knochen-und Banderlehre . Tokyo: Kanehara Shuppan.
28.
Ohala, J.J. (1973). Explanation for the intrinsic pitch of vowels . Memorandum (January) 9-26, Phonology Laboratory, University of California at Berkeley.
29.
Ohala, J.J., & Hirose, H. (1970). The function of the sternohyoid muscle in speech . Annual Bulletin of the Research Institute of Logopedics and Phoniatrics, 4, 41-44.
30.
Sapir, S. (1989). The intrinsic pitch of vowels: Theoretical, physiological, and clinical considerations. Journal of Voice, 3,44-51.
31.
Shipp, T. (1975). Vertical laryngeal position during continuous and discrete vocal frequency change. Journal of Speech and Hearing Research, 18, 707-718.
32.
Simada, Z., & Hirose, H. (1970). The function of the laryngeal muscles in respect to the word accent distinction. Annual Bulletin of the Research Institute of Logopedics and Phoniatrics, 4, 27 - 40.
33.
Sonninen, A. (1956). The role of the extrinsic laryngeal muscles in length-adjustment of the vocal cords in singing. Acta Otolaryngologica ,Suppl. 130.
34.
Sonninen, A. (1968). The external frame function in the control of pitch in the human voice. Annals of the New York Academy of Science,155,68 - 89.
35.
Whalen, D.H., & Levitt, A.G. (1995). The universality of intrinsic F0 of vowels. Journal of Phonetics, 23, 349-366.
36.
Tschiassny, K. (1944). Studies concerning the action of the musculus cricothyroideus. Laryngoscope , 54, 589-604.
37.
Zenker, W. (1964). Questions regarding the function of external laryngeal muscles: Research potentials in voice physiology (pp.20-40), New York: State Universityof New York.
