Articulatory placement for /t/, /d/, /k/ and /g/ targets in school age children with speech disorders associated with cleft palate

Abstract

This study used electropalatography (EPG) to identify place of articulation for lingual plosive targets /t/, /d/, /k/ and /g/ in the speech of 15 school age children with repaired cleft palate. Perceptual judgements indicated that all children had correct velar placement for /k/, /g/ targets, but /t/, /d/ targets were produced as errors involving palatalization or velar placement. An EPG classification scheme identified alveolar, palatal and velar placement. Articulations involving contact in alveolar and velar regions simultaneously were identified as alveolar velar double articulations (AVDAs). The classification revealed that AVDAs were relatively frequent, with 28% of alveolar and 12% of velar targets affected, and ten out of the 15 children produced one or more of these abnormal articulations. The majority of children had variable placements, with alveolar more variable than velar targets. The positive finding from the EPG data revealed that most children with perceptual errors for /t/, /d/ were able to make closure in the alveolar region during at least some of their attempts to articulate these targets. It is argued that appropriate analysis and interpretation of EPG data provide clinically relevant information about tongue placement in cleft palate speech.

Automatically evaluated degree of intelligibility of children with different cleft type from preschool and elementary school measured by automatic speech recognition

“…In Sell et al [7], palatalization and backing to uvular even range the second frequent consonant errors after dentalization/interdentalization [7]. Gibbon et al identified alveolar and uvular double articulations in /t/ and /d/ for children with cleft palate [65] and labial-lingual double articulations in few speakers with cleft palate as another form of compensatory speech disorder. The occurrence of misarticulations of Finnish dental consonants (/r/, /s/, and /l/) was reported to be maximal in children with a bilateral cleft lip and palate while children with just a cleft lip had the lowest number of misarticulations [40].…”

A expansão rápida da maxila com haas e a fala na fissura labiopalatina transforame

“…A hipernasalidade caracteriza-se por ressonância nasal de fones orais, causada pelo fechamento incompleto do esfíncter velofaríngeo 1,3,5,7,8 . Fonemas que necessitam de pressão intraoral para serem produzidos, como plosivos e fricativos, ocorrem com emissão nasal, também denominada escape aéreo nasal 1,5,9 . Na tentativa de impedir que a corrente aérea seja direcionada para o nariz pela falta de pressão intra-oral 8 , ocorrem movimentos compensatórios 1,3,6,7 , que acabam aumentando justamente o que tentam impedir.…”

Spectral analysis of word-initial alveolar and velar plosives produced by Iranian children with cleft lip and palate

“…Children with repaired CLP are known to have difficulty producing lingual-alveolar articulations (Casal et al, 2002;Gibbon, 2004;Gibbon & Crampin, 2001;Gibbon, Ellis, & Crampin, 2004;Okazaki, Kato, & Onizuka, 1991;Santelmann, Sussman, & Chapman, 1999;Trost, 1981;Yamashita & Michi, 1991;Zajac, Cevidanes, Shah, & Haley, 2012). Using radiographic procedures, Trost (1981) identified middorsum palatal stops substituted for alveolar and velar stops by English speakers.…”