Observations of perseverative coarticulation in lateral approximants using MRI

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

Abstract

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 [1]. We show here that rt-MRI techniques can track coarticulation direction by calculating the average pixel intensity [2] within a region of interest in MR images as a function of time.

Original languageEnglish (US)
Title of host publicationContributions to the 14th Annual Conference on Speech Communication (Interspeech), Lyon, France
Pages612-616
Number of pages5
StatePublished - 2013

Keywords

  • Lateral approximants
  • Magnetic resonance
  • Pharynx
  • Tigrinya

ASJC Scopus subject areas

  • Language and Linguistics
  • Human-Computer Interaction
  • Signal Processing
  • Software
  • Modeling and Simulation

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