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Tongue Segmentation

Upper surface of a 3D rectangularFinite Element Model, with 5 independently controlled tongue segments.

tsegments

FEM Settings

  • A. Five segments of SL active.
  • B. Segment one of SL active.
  • GG and Verticalis are always contracted at the tip (seg. 1).
  • Superior longitudinal (SL) activity differs in A and B.
  • B is more consistent with retroflexion (MRI picture).
    tsegMRI2
 
  
Uncorrolated Segmental Movement of the Tongue   
MoviesSegmental Motion  
rang_ran_slowtseg_rang  
    

The tongue can be divided into independently controlled (uncorrelated) “functional segments.” The movie shows five coronal tongue slices from front to back for “it ran” and “it rang” (red) and their reconstructed surface motion. At left are the tongue shape differences at each segment.

To see the raw data click here. To see the full 3D movies click here.

Stone, M., Epstein, M., and Iskarous, K. Functional segments in tongue movement. International Journal of Clinical Linguistics and Phonetics. (to appear 2004) -download this file

Yang, CS., and Stone, M., (2002) Dynamic Programming Method For Temporal Registration Of Three-Dimensional Tongue Surface Motion From Multiple Utterances. Speech Communication. Vol. 38, Nos. 1-2, September 2002, pp. 199-207. -download this file

The VTV Lab is part of the Dental School of the University of Maryland Baltimore.
Please send comments and suggestions regarding this site to Dr. Maureen Stone, Director of the Lab.