Changes in Articulator Movement Variability During Phonemic Development: A Longitudinal Study

Abstract

Oral articulator movement variability is reduced in children across the stabilization of voicing contrast acquisition. Further, the relationship between VOT contrast production and movement variability suggests that a coordinate system between the oral and laryngeal articulators may be refined as children acquire the voicing contrast.

Ocorrência de dessonorização no desvio fonológico: relação com fonemas mais acometidos, gravidade do desvio e idade

“…This way, there was no evidence of the influence of age on the use of the analyzed process. This finding disagrees with other studies (23)(24)(25) , which mention the presence of a more stabilized production of the [voice] feature in older children, and it is probably associated to a greater maturity of the phonoarticulatory organs. That is, these authors, using data from typical speech, suggest a complex relation between the motor variability of speech and the language development in children with respect to time.…”

Avaliações acústica e perceptiva de fala nos processos de dessonorização de obstruintes

“…Ana Paula Ramos de Souza (1) , Lisiane Collares Scott (2) , Carolina Lisbôa Mezzomo (3) , Roberta Freitas Dias (4) , Vanessa Giacchini (5) RESUMO Objetivo: comparar a percepção e a produção do traço de sonoridade de dois sujeitos, um em aquisição normal e outro com transtorno fonológico, e analisar as metodologias acústica e perceptual de investigação do traço [+ sonoro]. Procedimentos: um instrumento contendo pares mínimos com oposição do valor do traço sonoro foi criado para eliciar a fala dos sujeitos e proporcionar a análise acústica e perceptual do vozeamento em suas falas.…”

“…Por isso, a investigação das causas da dessonorização é de valor imensurável à prática clínica [1][2][3] . Estudos fonológicos e fonéticos sobre a dessonorização referem a idade dos 5 anos como o momento de supressão do processo na aquisição normal do Português Brasileiro, podendo estar completamente superado antes disso 4,5 . A estratégia de dessonorização representa a dificuldade na coordenação dos eventos gló-ticos e supraglóticos 6,7 .…”

A Lag in Speech Motor Coordination During Sentence Production Is Associated With Stuttering Persistence in Young Children

“…High STI scores indicate an unstable speech system that is less efficient in motor planning and execution (Smith & Goffman, 1998) and undergoing a period of learning and development (Goffman, 2010). Decreasing variability in articulation has been associated with advances in language development (Grigos, 2009). The linguistic demands of increasing sentence length and syntactic complexity conversely have a destabilizing effect on speech motor control in both typical children (Maner et al, 2000) and adults (Kleinow & Smith, 2006).…”

“…Adults who stutter (AWS) have exhibited atypical speech and nonspeech motor performance compared to their typical peers, specifically in coordination tasks between different motor components or effector systems (Forster & Webster, 2001;Zelaznik, Smith, Franz, & Ho, 1997). Stuttering has also been associated with limitations in motor learning (Bauerly & De Nil, 2011;Smits-Bandstra & De Nil, 2007, 2009, and in performance of a nonword repetition task, AWS showed immature speech motor learning patterns (Smith, Sadagopan, Walsh, & Weber-Fox, 2010).…”