ISCA Archive Interspeech 2013
ISCA Archive Interspeech 2013

Observations of perseverative coarticulation in lateral approximants using MRI

Nicole Wong, Maojing Fu, Zhi-Pei Liang, Ryan K. Shosted, Bradley P. Sutton

Recent advances in real-time magnetic resonance imaging (rt-MRI) make possible the following study of post-dorsal coarticulatory effects on lateral approximants in running speech. As the MRI is particularly well-suited for investigating pharyngeal articulations, it was capable of capturing perseverative coarticulation from a low central vowel to the immediately following syllable-initial lateral approximant. The lowered and retracted tongue body position associated with a low central vowel is articulatorily equivalent to a pharyngeal constriction. We show here that rt-MRI techniques can track coarticulation direction by calculating the average pixel intensity within a region of interest in MR images as a function of time.


doi: 10.21437/Interspeech.2013-166

Cite as: Wong, N., Fu, M., Liang, Z.-P., Shosted, R.K., Sutton, B.P. (2013) Observations of perseverative coarticulation in lateral approximants using MRI. Proc. Interspeech 2013, 612-616, doi: 10.21437/Interspeech.2013-166

@inproceedings{wong13_interspeech,
  author={Nicole Wong and Maojing Fu and Zhi-Pei Liang and Ryan K. Shosted and Bradley P. Sutton},
  title={{Observations of perseverative coarticulation in lateral approximants using MRI}},
  year=2013,
  booktitle={Proc. Interspeech 2013},
  pages={612--616},
  doi={10.21437/Interspeech.2013-166}
}