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Related Experiment Videos

Lingual action in normal sequential swallowing

G Chi-Fishman1, M Stone, G N McCall

  • 1Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, MD, USA. gcf@nih.gov

Journal of Speech, Language, and Hearing Research : JSLHR
|August 26, 1998
PubMed
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Swallowing involves adaptable tongue movements. While the core tongue-palate contact pattern remains consistent, timing adjusts for continuous drinking tasks, demonstrating flexible motor programs for swallowing.

Area of Science:

  • Biomechanics of swallowing
  • Motor control of the tongue

Background:

  • Understanding lingual motor control during swallowing is limited.
  • The flexibility of tongue movements in response to varying swallowing demands needs further investigation.

Purpose of the Study:

  • To investigate the motor flexibility of the tongue during swallowing.
  • To identify invariant and variable parameters within the lingual motor program under different swallowing tasks.

Main Methods:

  • Simultaneous electropalatography and ultrasound were used to examine tongue-palate contact and tongue shape.
  • Five healthy adults performed discrete (5 and 30 cc water) and sequential (200 cc water at normal and fast rates) swallowing tasks.

Main Results:

  • The propulsive tongue-palate contact pattern showed minimal variation across tasks and subjects.

Related Experiment Videos

  • Sequential swallowing resulted in shorter tongue movement durations and overlapping gestures.
  • Continuous drinking was achieved by adjusting the timing coordination of action sequences, not by altering fundamental motor strategies.

    • Conclusions:

    • The deglutitive lingual motor program contains both fixed (invariant) and adaptable (variant) parameters.
    • Tongue movement patterns and action sequences are relatively fixed, while movement timing is modulated based on task demands.