Document Detail

Anatomic development of the oral and pharyngeal portions of the vocal tract: an imaging study.
MedLine Citation:
PMID:  19275324     Owner:  NLM     Status:  MEDLINE    
The growth of the vocal tract (VT) is known to be non-uniform insofar as there are regional differences in anatomic maturation. This study presents quantitative anatomic data on the growth of the oral and pharyngeal portions of the VT from 605 imaging studies for individuals between birth and 19 years. The oral (horizontal) portion of the VT was segmented into lip-thickness, anterior-cavity-length, oropharyngeal-width, and VT-oral, and the pharyngeal (vertical) portion of the VT into posterior-cavity-length, and nasopharyngeal-length. The data were analyzed to determine growth trend, growth rate, and growth type (neural or somatic). Findings indicate differences in the growth trend of segments/variables analyzed, with significant sex differences for all variables except anterior-cavity-length. While the growth trend of some variables displays prepubertal sex differences at specific age ranges, the importance of such localized differences appears to be masked by overall growth rate differences between males and females. Finally, assessment of growth curve type indicates that most VT structures follow a combined/hybrid (somatic and neural) growth curve with structures in the vertical plane having a predominantly somatic growth pattern. These data on the non-uniform growth of the vocal tract reveal anatomic differences that contribute to documented acoustic differences in prepubertal speech production.
Houri K Vorperian; Shubing Wang; Moo K Chung; E Michael Schimek; Reid B Durtschi; Ray D Kent; Andrew J Ziegert; Lindell R Gentry
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Publication Detail:
Type:  Journal Article; Research Support, N.I.H., Extramural    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  125     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2009 Mar 
Date Detail:
Created Date:  2009-03-11     Completed Date:  2009-08-04     Revised Date:  2014-09-21    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  1666-78     Citation Subset:  IM    
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MeSH Terms
Child, Preschool
Infant, Newborn
Larynx* / anatomy & histology,  growth & development,  radiography
Magnetic Resonance Imaging*
Oropharynx / anatomy & histology,  growth & development,  radiography
Pharynx* / anatomy & histology,  growth & development,  radiography
Tomography, X-Ray Computed*
Young Adult
Grant Support
P-30 HD03352/HD/NICHD NIH HHS; P30 HD003352/HD/NICHD NIH HHS; P30 HD003352-319002/HD/NICHD NIH HHS; P30 HD003352-329002/HD/NICHD NIH HHS; P30 HD003352-32S19002/HD/NICHD NIH HHS; P30 HD003352-339002/HD/NICHD NIH HHS; P30 HD003352-349002/HD/NICHD NIH HHS; P30 HD003352-359002/HD/NICHD NIH HHS; P30 HD003352-369002/HD/NICHD NIH HHS; P30 HD003352-379002/HD/NICHD NIH HHS; P30 HD003352-389002/HD/NICHD NIH HHS; P30 HD003352-399002/HD/NICHD NIH HHS; R01 DC006282/DC/NIDCD NIH HHS; R01 DC006282-01/DC/NIDCD NIH HHS; R01 DC006282-02/DC/NIDCD NIH HHS; R01 DC006282-03/DC/NIDCD NIH HHS; R01 DC006282-04/DC/NIDCD NIH HHS; R01 DC006282-05/DC/NIDCD NIH HHS; R01 DC006282-05S1/DC/NIDCD NIH HHS; R01 DC6282/DC/NIDCD NIH HHS; R03 DC004362/DC/NIDCD NIH HHS; R03 DC004362-01/DC/NIDCD NIH HHS; R03 DC004362-02/DC/NIDCD NIH HHS; R03 DC004362-03/DC/NIDCD NIH HHS; R03 DC4362/DC/NIDCD NIH HHS

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