![]() Third, well-established acoustic measures are available to capture fricative production. (1990) showed that it was among the contrasts most related to intelligibility in speakers with dysarthria. Second, this speech sound contrast is important for intelligibility. First, these speech sounds require relatively fine control over tongue placement (e.g., Nittrouer, 1995) and therefore were expected to reveal differences even in children in the elementary school age range. Sibilant fricatives served as the vehicle to study these aspects of speech motor control for several reasons. For these reasons, the present study examined both contrast and coarticulation via acoustic measures. It is also possible that these two aspects of speech motor control represent distinct underlying skills, which may develop and be impaired differentially. The phonetic context of a speech sound may affect the ability to achieve adequate contrast and, vice versa, the ability to achieve distinct contrast may affect the transitions between sounds (coarticulation). Further, segments do not occur in isolation. Segmental contrast and coarticulation both represent aspects of speech production that require fine motor control, and as such, may provide a window into the development and disorders of complex speech motor skills. Segmental contrast is defined as the ability to differentiate speech sounds, and anticipatory coarticulation is defined as the ability to plan and transition into subsequent speech sounds (e.g., Lane, Matthies, Perkell, Vick, & Zandipour, 2001 Nittrouer, Studdert-Kennedy, & McGowan, 1989). The present study was designed to examine speech motor control in children with and without speech disorders, with a specific focus on segmental contrast and anticipatory consonant–vowel (CV) coarticulation. In addition, it is not clear whether different aspects of speech motor control, such as implementing adequate contrasts between speech sounds and transitioning between speech sounds, are affected differentially in different types of SSD. Although speech motor control is presumed impaired in children with childhood apraxia of speech (CAS e.g., Nijland et al., 2002), it is not clear whether such impairments are specific to CAS or whether they also occur in children with other speech sound disorders (SSD), such as phonological disorders (PD). It is also not surprising that some children have difficulty acquiring adequate speech motor skills. Given the complex nature of speech production, it is not surprising that speech motor development lasts well into the school years (e.g., Nittrouer, 1995 Smith & Zelaznik, 2004). ![]() ![]() Successful speech communication depends, in part, on this motor skill to produce adequate contrasts and transitions between speech sounds. Speech production involves a complex motor skill that requires rapid and precise articulator movement patterns. ![]() This special issue contains selected papers from the March 2016 Conference on Motor Speech held in Newport Beach, CA. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |