Perceptually Salient Sound Distortions and Apraxia of Speech: A Performance Continuum.
Saved in:
| Title: | Perceptually Salient Sound Distortions and Apraxia of Speech: A Performance Continuum. |
|---|---|
| Authors: | Haley, Katarina L.1 khaley@med.unc.edu, Jacks, Adam1, Richardson, Jessica D.2, Wambaugh, Julie L.3,4 |
| Source: | American Journal of Speech-Language Pathology. 2017 Supplement J, Vol. 26 Issue 2S, p631-640. 10p. 5 Charts, 1 Graph. |
| Subject Terms: | *Articulation disorders, *Articulation (Speech), *Aphasia, *Phonetic transcriptions, *Comparative studies, *Statistical correlation, *Speech evaluation, *Inter-observer reliability, Speech errors, Speech apraxia, Sound, Error rates, Head injury complications, Phonetics, Research funding, Physiological aspects of speech, Stroke, Mathematical variables, Severity of illness index, Medical coding, Descriptive statistics, Disease complications |
| Abstract: | Purpose: We sought to characterize articulatory distortions in apraxia of speech and aphasia with phonemic paraphasia and to evaluate the diagnostic validity of error frequency of distortion and distorted substitution in differentiating between these disorders. Method: Study participants were 66 people with speech sound production difficulties after left-hemisphere stroke or trauma. They were divided into 2 groups on the basis of word syllable duration, which served as an external criterion for speaking rate in multisyllabic words and an index of likely speech diagnosis. Narrow phonetic transcriptions were completed for audio-recorded clinical motor speech evaluations, using 29 diacritic marks. Results: Partial voicing and altered vowel tongue placement were common in both groups, and changes in consonant manner and place were also observed. The group with longer word syllable duration produced significantly more distortion and distorted-substitution errors than did the group with shorter word syllable duration, but variations were distributed on a performance continuum that overlapped substantially between groups. Conclusions: Segment distortions in focal left-hemisphere lesions can be captured with a customized set of diacritic marks. Frequencies of distortions and distorted substitutions are valid diagnostic criteria for apraxia of speech, but further development of quantitative criteria and dynamic performance profiles is necessary for clinical utility. [ABSTRACT FROM AUTHOR] |
| Copyright of American Journal of Speech-Language Pathology is the property of American Speech-Language-Hearing Association and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Education Research Complete |
Be the first to leave a comment!
