Immediate and sustained changes in tongue movement with an experimental palatal Fistula: A case study

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Data

2005-05-01

Autores

Marino, Viviane Cristina de Castro [UNESP]
Williams, W. N.
Wharton, P. W.
Paulk, M. F.
Dutka-Souza, JCR
Schulz, G. M.

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Editor

Alliance Communications Group Division Allen Press

Resumo

Objective: To determine the immediate and longer-term effect(s) on tongue movement following the placement of an experimental opening through a palatal obturator (replicate of subject's prosthesis) worn by an adult male with an unrepaired cleft of the hard and soft palate.Methods: Tongue movements associated with an anterior experimental opening of 20 mm(2) were examined under three conditions: a control condition in which the subject wore the experimental obturator completely occluded, a condition immediately after drilling the experimental openings through the obturator, and a condition after 5 days in which the subject wore the experimental obturator with the experimental opening. An Electromagnetic Articulograph was used for obtaining tongue movements during speech.Results: the findings partly revealed that the immediate introduction of a perturbation to the speech system (experimental fistula) had a temporary effect on tongue movement. After sustained perturbation (for 5 days), the system normalized (going back toward control condition's behavior). Perceptual data were consistent with kinematic tongue movement direction in most of the cases.Conclusions: Although the immediate response can be interpreted as indicative of the subject's attempts to move the tongue toward the opening to compensate for air loss, the findings following a sustained perturbation indicate that with time, other physiological adjustments (such as respiratory adjustments, for example) may help reestablish the requirements of a pressure-regulating system.

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Palavras-chave

experimental palatal opening, motor adaptation, palatal fistula, tongue kinematics

Como citar

Cleft Palate-craniofacial Journal. Lawrence: Alliance Communications Group Division Allen Press, v. 42, n. 3, p. 286-296, 2005.