Evidence of motor programming deficits in children diagnosed with DAS

Lian Nijland*, Ben Maassen, Sjoeke van Der Meulen

*Bijbehorende auteur voor dit werk

Onderzoeksoutput: ArticleAcademicpeer review

40 Citaten (Scopus)


In this study the hypothesis of motor programming involvement in developmental apraxia of speech (DAS) was investigated by studying articulatory compensation. Five children with DAS and 5 normally speaking children (age 5;0 [years;months] to 6;10), and 6 adult women produced utterances in a normal speaking condition and in a bite-block condition in which the mandible was kept in a fixed position. Throughout the utterances, the course of the second formant was used to determine articulatory compensation and the effect of the bite block on anticipatory coarticulation. Results showed that the bite-block condition in normally speaking children, like in adult women, did not affect the extent of anticipatory coarticulation. In the speech of children with DAS, the bite block had large effects on coarticulatory patterns and on vowel quality, which, contrary to expectations, had improved. These results are interpreted as a clear demonstration of deficient motor programming in DAS.

Originele taal-2English
Pagina's (van-tot)437-450
Aantal pagina's14
TijdschriftJournal of speech, language, and hearing research
Nummer van het tijdschrift2
StatusPublished - 1-apr.-2003
Extern gepubliceerdJa

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