Observation and simulation of large-scale deformation of tongue

Jianwu Dang, Satoru Fujita, Emi Murano, Maureen Stone

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

To develop a physiological articulator model for speech production, mastication and swallowing, we proposed an analysis-by-synthesis (AbS) based estimation method for investigating contributions of the tongue muscles in both exterior movement and interior deformation using observations and model simulations. The validity of the method was confirmed by comparing the estimated muscle activation to known muscle activation via model simulation using a full three dimensional physiological articulatory model. Observations were conducted to measure several simple tasks of large-scale tongue deformations using tagged magnetic resonance imaging (tMRI), and the principal strain of the deformations were analyzed using HARP MRI analysis The muscle activation was examined based on the principal strain pattern and anatomic knowledge. According to the observation, a muscle activation pattern was designed to generate a tongue movement with extreme protrusion-retraction using the model Muscle activation in the movement was estimated by comparing the principal strain pattern and known muscle forces. The model simulation and tMRI observation showed consistent strain patterns with each other. The • study showed that the muscle activation within tongue • movement is able to be estimated from local deformations • using the AbS method.

Original languageEnglish (US)
Title of host publicationISSP 2006 - Proceedings of the 7th International Seminar on Speech Production
PublisherCEFALA
Pages43-50
Number of pages8
ISBN (Print)8599598023, 9788599598023
StatePublished - Jan 1 2006
Event7th International Seminar on Speech Production, ISSP 2006 - Ubatuba, Brazil
Duration: Dec 13 2006Dec 15 2006

Publication series

NameISSP 2006 - Proceedings of the 7th International Seminar on Speech Production

Other

Other7th International Seminar on Speech Production, ISSP 2006
Country/TerritoryBrazil
CityUbatuba
Period12/13/0612/15/06

ASJC Scopus subject areas

  • Speech and Hearing

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