Syllabic patterns in typical and atypical phonological development: ultrasonographic analysis.

Aline Mara De Oliveira Vassoler,Larissa Cristina Berti

doi:10.1590/2317-1782/20182017067

Aline Mara De Oliveira Vassoler, Larissa Cristina Berti

Open Access

https://doi.org/10.1590/2317-1782/20182017067

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Abstract

Objective The present study aims to compare the production of syllabic patterns of the CVC and CV types performed by Brazilian children with typical and atypical phonological development through ultrasonography of tongue. Methods Ten children (five with typical and with five atypical phonological development) recorded nine pairs of words from the syllables: CCV and CV. The images and audios were captured simultaneously by the Articulate Assistant Advanced software. The data were submitted to perceptive analysis and ultrasonographic articulatory analysis (the area between the tip and the blade of the tongue). The area measurements were submitted to one-way repeated measures ANOVA. Results ANOVA demonstrated a significant effect for the clinical condition (typical and atypical), (F (1.8) = 172.48, p> 0.000) forthe area measurements. In both syllabic patterns (CCV and CV) the atypical children showed greater values of the area between the tip and the blade of the tongue. Regarding the syllabic patterns analyzed, the statistical test showed no significant effect (F (1.8)=0.19, p>0.658). Conclusion The use of a greater area of the tongue by children with atypical phonological development suggests the non-differentiation of the tip and the anterior body gestures of the tongue in the production of CV and CCV.

Highlights

IntroductionThe CV structure (consonant and vowel) precedes the acquisition of the CCV structure (consonant, consonant and vowel)(1)
In syllabic terms, the CV structure precedes the acquisition of the CCV structure(1)
The present study aims to compare the production of syllabic patterns of the CVC and CV types performed by Brazilian children with typical and atypical phonological development through ultrasonography of tongue

Summary

Introduction

The CV structure (consonant and vowel) precedes the acquisition of the CCV structure (consonant, consonant and vowel)(1). There is a consensus in the literature[1,2,3] that the lateral liquids are acquired before the rhotic ones, being these stabilized in the phonological system of the child by the age of five years[4]. Researches[2,3,5] point out that CCV syllables are acquired lately because of their phonological complexity, on the one hand, and, on the other hand, because of their articulatory complexity. In the attempt to adjust the target phonological system to the expected phonological system, in the position of the segment and/or syllabic structure unknown or improperly produced, children make use of resources called repair strategies. In the case of the CCV syllabic structure, the repair strategies are commonly simplified from CCV to CV[3]

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Discussion

Conclusion