CoDAS
http://www.codas.periodikos.com.br/article/doi/10.1590/2317-1782/20202018185
CoDAS
Artigo Original

Tongue movements in the production of /l/ in children with and without speech sound disorders in different ages

Movimentos de língua na produção do /l/ em crianças com e sem distúrbios dos sons da fala em diferentes faixas etárias

Luciana da Silva Barberena; Caroline Rodrigues Portalete; Denis Altieri de Oliveira Moraes; Larissa Cristina Berti; Márcia Keske-Soares

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Abstract

Purpose: this study used the ultrasonography of the tongue movements and the dynamic models of speech production to characterize the articulatory gestures of in the production of /l/ at the Brazilian Portuguese in different age groups, comparing them between typical and atypical children. Methods: the sample consisted of 30 typical and 30 atypical children between ages of four and eight-years-old, who underwent speech-language and ultrasonographic evaluations. The evaluation was realized by recording words reproduction with the sound /l/ and the following vocalic contexts: /a/, /i/ and /u/, repeating six times for each word. The software for recording and analysis was Articulate Assistant Advanced (AAA). The quantitative analysis considered the 42 points that intercepted the tongue curves in each image to describe the articulatory gestures; the estimation of the mean lines of each curve and the confidence intervals between typical and atypical children groups; and the differences between the mean tongue contours curves according to age group. Results: the results presented a tongue tip elevation and dorsal and root retraction in /l/. Typical children, regardless of age, showed a greater refinement of articulatory tongue gestures than the atypical ones. In older children, there was more delimitation in the mean tongue contours from the tongue tip to the root. Conclusion: the ultrasonography of the tongue movements is a substantial implement to characterize the articulatory gestures of /l/, to the differentiation between typical and atypical productions in this sound, and observation of the development of the articulatory gestures

Keywords

Speech Sound Disorders; Assessment; Ultrasonography; Speech Articulation Tests; Speech

Resumo

Objetivo: este estudo utilizou a ultrassonografia dos movimentos de língua e modelos dinâmicos de produção de fala para caracterizar os gestos articulatórios na produção do /l/ no Português Brasileiro (PB) em diferentes faixas etárias, comparando-os entre crianças típicas e atípicas. Método: a amostra foi constituída por 30 crianças típicas e 30 atípicas, com idades entre 4 e 8 anos, submetidas a avaliações fonoaudiológica e ultrassonográfica. A avaliação foi realizada mediante gravação da produção de palavras com o som /l/ nos contextos vocálicos de /a/, /i/ e /u/, com seis repetições de cada palavra. O software utilizado foi o Articulate Assistant Advanced (AAA). Para as análises quantitativas foram considerados: os 42 pontos que interceptaram as curvas de língua em cada imagem para descrição dos gestos articulatórios; o cálculo das linhas médias de cada curva e os intervalos de confiança entre os grupos; e o cálculo das diferenças entre as curvas médias dos contornos de língua de acordo com a faixa etária. Resultados: houve elevação de ponta de língua e retração de dorso e raiz na articulação do /l/. As crianças típicas, independentemente da idade, apresentaram maior refinamento dos gestos articulatórios de língua do que as atípicas. Nas crianças mais velhas, houve maior delimitação nos contornos médios de língua desde a ponta até a raiz. Conclusão: a ultrassonografia dos movimentos de língua é uma importante ferramenta para a caracterização dos gestos articulatórios do /l/, para diferenciação entre as produções típica e atípica deste som, e observação do desenvolvimento dos gestos articulatórios.

Palavras-chave

Distúrbios dos Sons da Fala; Avaliação; Ultrassonografia; Testes de Articulação da Fala; Fala

Referências

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Submetido em:
29/08/2019

Aceito em:
29/10/2019

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