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Anatomic development of the vocal tr...
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Vorperian, Houri Kaloustian.
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Anatomic development of the vocal tract structures as visualized by magnetic resonance imaging.
紀錄類型:
書目-電子資源 : Monograph/item
正題名/作者:
Anatomic development of the vocal tract structures as visualized by magnetic resonance imaging./
作者:
Vorperian, Houri Kaloustian.
面頁冊數:
226 p.
附註:
Source: Dissertation Abstracts International, Volume: 61-06, Section: B, page: 3034.
Contained By:
Dissertation Abstracts International61-06B.
標題:
Health Sciences, Speech Pathology. -
電子資源:
http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9976509
ISBN:
0599822643
Anatomic development of the vocal tract structures as visualized by magnetic resonance imaging.
Vorperian, Houri Kaloustian.
Anatomic development of the vocal tract structures as visualized by magnetic resonance imaging.
- 226 p.
Source: Dissertation Abstracts International, Volume: 61-06, Section: B, page: 3034.
Thesis (Ph.D.)--The University of Wisconsin - Madison, 2000.
The vocal tract structures subserve the functions of speech communication and food ingestion throughout the lifespan. Especially during the periods of infancy, early childhood, and adolescence, these structures undergo changes in size, shape, and relative configuration that affect their participation in oral motor functions. Although the evidence for anatomic remodeling is compelling, knowledge of the details of the process is remarkably limited. The purpose of this research was to quantitatively characterize the growth process of the vocal tract structures between the ages birth to six years, the age range during which phonological mastery is achieved. This was achieved through the use of Magnetic Resonance Imaging (MRI), which is suited for the study of both soft and hard tissues that comprise the vocal tract. The procedure entailed the selection of suitable MR images, digitizing these images, and utilizing image measurement software to obtain data for 36 predefined measures of the head and neck regions. Measurements were made on 51 cases, 30 of which were repeat MRIs (i.e. longitudinal data). Conclusions based on findings indicate that: (1) Head length (gnathion-opisthocranion) is one index of growth that can predict the growth of vocal tract structures between the ages birth to approximately age six. (2) Head measurements appear to follow the neural growth curve, whereas most of the vocal tract structures appear to either follow the general growth curve or a combination of neural and general growth curves. (3) There appears to be synchronized growth, and coordinated growth spurts in hard and soft tissue structures that function as a unit (e.g., tongue length with maxillary and mandibular length). (4) Posterior structures and predominantly hard tissue structures contribute more to vocal tract lengthening than anterior structures (or soft tissue structures) during the first two years of life. The findings of this study contribute to knowledge on craniofacial development, and are of theoretical and clinical significance particularly in the areas of speech development and speech production.
ISBN: 0599822643Subjects--Topical Terms:
1018105
Health Sciences, Speech Pathology.
Anatomic development of the vocal tract structures as visualized by magnetic resonance imaging.
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The vocal tract structures subserve the functions of speech communication and food ingestion throughout the lifespan. Especially during the periods of infancy, early childhood, and adolescence, these structures undergo changes in size, shape, and relative configuration that affect their participation in oral motor functions. Although the evidence for anatomic remodeling is compelling, knowledge of the details of the process is remarkably limited. The purpose of this research was to quantitatively characterize the growth process of the vocal tract structures between the ages birth to six years, the age range during which phonological mastery is achieved. This was achieved through the use of Magnetic Resonance Imaging (MRI), which is suited for the study of both soft and hard tissues that comprise the vocal tract. The procedure entailed the selection of suitable MR images, digitizing these images, and utilizing image measurement software to obtain data for 36 predefined measures of the head and neck regions. Measurements were made on 51 cases, 30 of which were repeat MRIs (i.e. longitudinal data). Conclusions based on findings indicate that: (1) Head length (gnathion-opisthocranion) is one index of growth that can predict the growth of vocal tract structures between the ages birth to approximately age six. (2) Head measurements appear to follow the neural growth curve, whereas most of the vocal tract structures appear to either follow the general growth curve or a combination of neural and general growth curves. (3) There appears to be synchronized growth, and coordinated growth spurts in hard and soft tissue structures that function as a unit (e.g., tongue length with maxillary and mandibular length). (4) Posterior structures and predominantly hard tissue structures contribute more to vocal tract lengthening than anterior structures (or soft tissue structures) during the first two years of life. The findings of this study contribute to knowledge on craniofacial development, and are of theoretical and clinical significance particularly in the areas of speech development and speech production.
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http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=9976509
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