D A Berry1, J B Moon, D P Kuehn. 1. Department of Speech Pathology and Audiology, The National Center for Voice and Speech, The University of Iowa, Iowa City 52242-1012, USA. david-berry@uiowa.edu
Abstract
OBJECTIVE: As a step toward better understanding of normal and abnormal velar control, a finite element model of the soft palate was developed. DESIGN: A static two-dimensional midsagittal model of the velum was given physical dimensions to match that of a 10-year-old boy. Biomechanical properties of the tissues were inferred based on previous histologic studies. Velar movements were induced by the influence of three extrinisic velar muscles: the levator veli palatini, the palatoglossus, and the palatopharyngeus, which were simulated as external forces acting on the velar model. RESULTS AND CONCLUSIONS: Velopharyngeal opened and closed positions were simulated as well as a variety of intermediate steps between the two configurations. Velopharyngeal closure was also simulated in a manner appropriate for both high and low vowels. Future extensions of the model will incorporate the muscles as an intrinsic component of the model and will include a full time-dependent implementation, including inertial effects. Future studies will compare model predictions with experimental data from the laboratory, including both kinematic data and velopharyngeal closure forces.
OBJECTIVE: As a step toward better understanding of normal and abnormal velar control, a finite element model of the soft palate was developed. DESIGN: A static two-dimensional midsagittal model of the velum was given physical dimensions to match that of a 10-year-old boy. Biomechanical properties of the tissues were inferred based on previous histologic studies. Velar movements were induced by the influence of three extrinisic velar muscles: the levator veli palatini, the palatoglossus, and the palatopharyngeus, which were simulated as external forces acting on the velar model. RESULTS AND CONCLUSIONS: Velopharyngeal opened and closed positions were simulated as well as a variety of intermediate steps between the two configurations. Velopharyngeal closure was also simulated in a manner appropriate for both high and low vowels. Future extensions of the model will incorporate the muscles as an intrinsic component of the model and will include a full time-dependent implementation, including inertial effects. Future studies will compare model predictions with experimental data from the laboratory, including both kinematic data and velopharyngeal closure forces.
Authors: Peter Anderson; Sidney Fels; Ian Stavness; William G Pearson; Bryan Gick Journal: J Speech Lang Hear Res Date: 2019-04-15 Impact factor: 2.297
Authors: Dhananjay Radhakrishnan Subramaniam; Goutham Mylavarapu; Keith McConnell; Robert J Fleck; Sally R Shott; Raouf S Amin; Ephraim J Gutmark Journal: Ann Biomed Eng Date: 2015-08-28 Impact factor: 3.934
Authors: Catherine M Pelland; Xue Feng; Kathleen C Borowitz; Craig H Meyer; Silvia S Blemker Journal: J Speech Lang Hear Res Date: 2019-08-07 Impact factor: 2.297
Authors: Erik P Rader; Paul S Cederna; William T McClellan; Stephanie A Caterson; Kip E Panter; Deborah Yu; Steven R Buchman; Lisa M Larkin; John A Faulkner; Jeffrey Weinzweig Journal: Cleft Palate Craniofac J Date: 2008-03