Artículos de revistas
Análise ultrassonográfica quantitativa do movimento da língua em 14 fonemas do Português Brasileiro
Fecha
2017-09-04Registro en:
CoDAS, v. 29, n. 4, p. e20160211-, 2017.
2317-1782
10.1590/2317-1782/20172016211
S2317-17822017000400313
2-s2.0-85030786168
S2317-17822017000400313.pdf
Autor
Universidade Estadual Paulista (Unesp)
Institución
Resumen
Purpose: The aim of this study was to characterize the ultrasonographic pattern of tongue movement in 14 consonant phonemes of Brazilian Portuguese (BP), seeking to identify and describe ultrasonographic parameters that could grasp the difference of manner and place of articulation among these phonemes. Methods: We selected 20 individuals with typical speech production, aged between 20-30 years of both genders. The selected stimuli included the 14 lingual consonant BP phonemes in the intervocalic context of [a]. Data were collected and analyzed with the use of ultrasound, and the AAA (Articulate Assistant Advanced) and the Ultra-CATS (The Ultrasonographic Contour Analyzer for Tongue Surfaces) softwares. Three ultrasound parameters were used for data analysis: anteriority index (AI), global average of tongue height (GA) and relative anteriority index (RAI). Data were statistically analyzed. Results: ANOVA showed a significant effect on the parameters and the RAI differentiated phonemes as the place (alveolar, pre-palatal, palatal and velar) and manner of articulation (fricative, nasal and occlusive); GA differentiate phonemes only as the place of articulation (alveolar, pre-palatal and velar). Conclusion: There was no single US parameter that could differentiate place and manner of articulation simultaneously. The clinical application for analysis of speech production disorders require the use of at least two ultrasound parameters: one to distinguish the place and another to distinguish the articulation manner.