TY - GEN
T1 - The interplay between dynamics and muscle activation in the tongue during speech
AU - Essex-Torcaso, Carolyn
AU - Levine, William S.
AU - Murano, Emi Z.
AU - Stone, Maureen
PY - 2006
Y1 - 2006
N2 - The human tongue is used in speaking, an activity unique to humans. The tongue is unusual in that it does not contain any rigid structure, such as a bone, for its muscles to act against. In an effort to better understand the biomechanics and control of the tongue, a mathematical model has been created. This model is in the form of a nonlinear controllable incompressible elastic structure that undergoes large deformations. The model was then used to solve a simplified inverse problem. The trajectories of arbitrary points within the tongue were obtained by means of tagged cine MRI. This data was then used as input to a two-dimensional simplification of the model. The output was the set of muscle activations that produced the best approximation to the observed motion in a least squares sense. This results in information relevant to two biological questions-How many independently controllable motor units are there in the tongue? How important are the dynamics of the tongue in determining its shape?.
AB - The human tongue is used in speaking, an activity unique to humans. The tongue is unusual in that it does not contain any rigid structure, such as a bone, for its muscles to act against. In an effort to better understand the biomechanics and control of the tongue, a mathematical model has been created. This model is in the form of a nonlinear controllable incompressible elastic structure that undergoes large deformations. The model was then used to solve a simplified inverse problem. The trajectories of arbitrary points within the tongue were obtained by means of tagged cine MRI. This data was then used as input to a two-dimensional simplification of the model. The output was the set of muscle activations that produced the best approximation to the observed motion in a least squares sense. This results in information relevant to two biological questions-How many independently controllable motor units are there in the tongue? How important are the dynamics of the tongue in determining its shape?.
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M3 - Conference contribution
AN - SCOPUS:84906991855
SN - 8599598023
SN - 9788599598023
T3 - ISSP 2006 - Proceedings of the 7th International Seminar on Speech Production
SP - 175
EP - 182
BT - ISSP 2006 - Proceedings of the 7th International Seminar on Speech Production
PB - CEFALA
T2 - 7th International Seminar on Speech Production, ISSP 2006
Y2 - 13 December 2006 through 15 December 2006
ER -