Extending Ultrasound Tongue Shape Complexity Measures to Speech Development and Disorders
| Autor: | Heather Kabakoff, Douglas H. Whalen, Tara McAllister, Mark Tiede, Daphna Harel |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Adult
Linguistics and Language medicine.medical_specialty Audiology Speech Sound Disorder Language and Linguistics 030507 speech-language pathology & audiology 03 medical and health sciences Speech and Hearing 0302 clinical medicine Speech Production Measurement Tongue Phonetics medicine Humans Speech Child Association (psychology) Control (linguistics) Ultrasonography business.industry Ultrasound Motor control medicine.disease medicine.anatomical_structure Speech development Covert Child Preschool Speech sound disorder 0305 other medical science business Psychology 030217 neurology & neurosurgery |
| Zdroj: | J Speech Lang Hear Res |
| ISSN: | 1558-9102 1092-4388 |
| Popis: | Purpose Generalizations can be made about the order in which speech sounds are added to a child's phonemic inventory and the ways that child speech deviates from adult targets in a given language. Developmental and disordered speech patterns are presumed to reflect differences in both phonological knowledge and skilled motor control, but the relative contribution of motor control remains unknown. The ability to differentially control anterior versus posterior regions of the tongue increases with age, and thus, complexity of tongue shapes is believed to reflect an individual's capacity for skilled motor control of speech structures. Method The current study explored the relationship between tongue complexity and phonemic development in children (ages 4–6 years) with and without speech sound disorder producing various phonemes. Using established metrics of tongue complexity derived from ultrasound images, we tested whether tongue complexity incrementally increased with age in typical development, whether tongue complexity differed between children with and without speech sound disorder, and whether tongue complexity differed based on perceptually rated accuracy (correct vs. incorrect) for late-developing phonemes in both diagnostic groups. Results Contrary to hypothesis, age was not significantly associated with tongue complexity in our typical child sample, with the exception of one association between age and complexity of /t/ for one measure. Phoneme was a significant predictor of tongue complexity, and typically developing children had more complex tongue shapes for /ɹ/ than children with speech sound disorder. Those /ɹ/ tokens that were rated as perceptually correct had higher tongue complexity than the incorrect tokens, independent of diagnostic classification. Conclusions Quantification of tongue complexity can provide a window into articulatory patterns characterizing children's speech development, including differences that are perceptually covert. With the increasing availability of ultrasound imaging, these measures could help identify individuals with a prominent motor component to their speech sound disorder and could help match those individuals with a corresponding motor-based treatment approach. Supplemental Material https://doi.org/10.23641/asha.14880039 |
| Databáze: | OpenAIRE |
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