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A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape.

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Title: A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape.
Authors: Stavness, Ian1 stavness@gmail.com, Nazari, Mohammad Ali2,3, Perrier, Pascal2, Demolin, Didier2, Payan, Yohan4, Kreiman, Jody, Bunton, Kate
Source: Journal of Speech, Language & Hearing Research. Jun2013, Vol. 56 Issue 3, p878-890. 13p. 2 Color Photographs, 8 Diagrams, 4 Charts.
Subject Terms: *Computer software, *Experimental design, Tongue physiology, Jaw physiology, Facial muscles, Lips, Biomechanics, Posture, Speech, Tomography, Physiology, Anatomy
Abstract: Purpose: The authors’ general aim is to use biomechanical models of speech articulators to explore how possible variations in anatomical structure contribute to differences in articulatory strategies and phone systems across human populations. Specifically, they investigated 2 issues: (a) the link between lip muscle anatomy and variability in lip gestures and (b) the constraints of coupled lip/jaw biomechanics on jaw posture in labial sounds. Method: The authors used a model coupling the jaw, tongue, and face. First, the influence of the orbicularis oris (OO) anatomical implementation was analyzed by assessing how changes in depth (from epidermis to the skull) and peripheralness (proximity to the lip horn center) affected lip shaping. Second, the capability of the lip/jaw system to generate protrusion and rounding, or labial closure, was evaluated for different jaw heights. Results: Results showed that a peripheral and moderately deep OO implementation is most appropriate for protrusion and rounding; a superficial implementation facilitates closure; protrusion and rounding require a high jaw position; and closure is achievable for various jaw heights. Conclusions:Models provide objective information regarding possible links between anatomical and speech production variability across humans. Comparisons with experimental data will illustrate how motor control and cultural factors cope with these constraints. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Speech, Language & Hearing Research is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Label: Title
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  Data: A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape.
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  Data: <searchLink fieldCode="AR" term="%22Stavness%2C+Ian%22">Stavness, Ian</searchLink><relatesTo>1</relatesTo><i> stavness@gmail.com</i><br /><searchLink fieldCode="AR" term="%22Nazari%2C+Mohammad+Ali%22">Nazari, Mohammad Ali</searchLink><relatesTo>2,3</relatesTo><br /><searchLink fieldCode="AR" term="%22Perrier%2C+Pascal%22">Perrier, Pascal</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Demolin%2C+Didier%22">Demolin, Didier</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Payan%2C+Yohan%22">Payan, Yohan</searchLink><relatesTo>4</relatesTo><br /><searchLink fieldCode="AR" term="%22Kreiman%2C+Jody%22">Kreiman, Jody</searchLink><br /><searchLink fieldCode="AR" term="%22Bunton%2C+Kate%22">Bunton, Kate</searchLink>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Speech%2C+Language+%26+Hearing+Research%22">Journal of Speech, Language & Hearing Research</searchLink>. Jun2013, Vol. 56 Issue 3, p878-890. 13p. 2 Color Photographs, 8 Diagrams, 4 Charts.
– Name: Subject
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  Data: *<searchLink fieldCode="DE" term="%22Computer+software%22">Computer software</searchLink><br />*<searchLink fieldCode="DE" term="%22Experimental+design%22">Experimental design</searchLink><br /><searchLink fieldCode="DE" term="%22Tongue+physiology%22">Tongue physiology</searchLink><br /><searchLink fieldCode="DE" term="%22Jaw+physiology%22">Jaw physiology</searchLink><br /><searchLink fieldCode="DE" term="%22Facial+muscles%22">Facial muscles</searchLink><br /><searchLink fieldCode="DE" term="%22Lips%22">Lips</searchLink><br /><searchLink fieldCode="DE" term="%22Biomechanics%22">Biomechanics</searchLink><br /><searchLink fieldCode="DE" term="%22Posture%22">Posture</searchLink><br /><searchLink fieldCode="DE" term="%22Speech%22">Speech</searchLink><br /><searchLink fieldCode="DE" term="%22Tomography%22">Tomography</searchLink><br /><searchLink fieldCode="DE" term="%22Physiology%22">Physiology</searchLink><br /><searchLink fieldCode="DE" term="%22Anatomy%22">Anatomy</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Purpose: The authors’ general aim is to use biomechanical models of speech articulators to explore how possible variations in anatomical structure contribute to differences in articulatory strategies and phone systems across human populations. Specifically, they investigated 2 issues: (a) the link between lip muscle anatomy and variability in lip gestures and (b) the constraints of coupled lip/jaw biomechanics on jaw posture in labial sounds. Method: The authors used a model coupling the jaw, tongue, and face. First, the influence of the orbicularis oris (OO) anatomical implementation was analyzed by assessing how changes in depth (from epidermis to the skull) and peripheralness (proximity to the lip horn center) affected lip shaping. Second, the capability of the lip/jaw system to generate protrusion and rounding, or labial closure, was evaluated for different jaw heights. Results: Results showed that a peripheral and moderately deep OO implementation is most appropriate for protrusion and rounding; a superficial implementation facilitates closure; protrusion and rounding require a high jaw position; and closure is achievable for various jaw heights. Conclusions:Models provide objective information regarding possible links between anatomical and speech production variability across humans. Comparisons with experimental data will illustrate how motor control and cultural factors cope with these constraints. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Speech, Language & Hearing Research is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=ehh&AN=90607926
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        Value: 10.1044/1092-4388(2012/12-0200)
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        Text: English
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        PageCount: 13
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      – SubjectFull: Computer software
        Type: general
      – SubjectFull: Experimental design
        Type: general
      – SubjectFull: Tongue physiology
        Type: general
      – SubjectFull: Jaw physiology
        Type: general
      – SubjectFull: Facial muscles
        Type: general
      – SubjectFull: Lips
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      – SubjectFull: Biomechanics
        Type: general
      – SubjectFull: Posture
        Type: general
      – SubjectFull: Speech
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      – SubjectFull: Tomography
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      – SubjectFull: Anatomy
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      – TitleFull: A Biomechanical Modeling Study of the Effects of the Orbicularis Oris Muscle and Jaw Posture on Lip Shape.
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              Text: Jun2013
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