• Robin, Donald A (PI)

Project: Research project

Project Details


The tongue is one of the main articulators used to shape the vocal
tract to produce perceptually accurate speech. The strength of the
tongue is routinely examined by speech-language pathologists when they
attempt to diagnose and recommend treatments for patients with speech
sound disorders. Typically measures of tongue strength are made
subjectively. Thus, there are no standardized norms for tongue strength
that clinicians can use to determine if the performance of an individual
patient is normal or not. Moreover, little is known about the relation
of maximal strength of the tongue and articulatory precision. Thus,
studies are needed to address these issues in a systematic manner. A second measure that is of potential importance to speech
production is that of fatigue. There have been no studies to date
examining tongue fatigue. Yet, the time course of fatigue, its amount,
and the time course of its recovery may be critical in maintaining
accurate speech articulation. We have developed a portable, inexpensive, instrument for measuring
tongue strength and fatigue, and have, in preliminary experiments,
developed the procedures to be used with it. We propose to further study
the tongue and its relation to speech by studying maximal tongue strength
and tongue fatigue in a larger group of subjects for the purpose of
developing normal standards and to examine the relation between these
measures and accurate articulation as measured by speech sound production
and intelligibility. The goal of the studies proposed here are to begin the study of
strength and fatigue by looking at the anterior tongue. If these
measures are informative, these studies will be used as a framework for
examination of other aspects of tongue movement (e.g. lateral) as well as
the strength and fatigue of other oral structures (e.g. lips).
Effective start/end date4/1/913/31/93


  • National Institutes of Health: $29,135.00


  • Medicine(all)
  • Neuroscience(all)


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