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Perceptually Salient Sound Distortions and Apraxia of Speech: A Performance Continuum
- Source :
- American Journal of Speech-Language Pathology. 26:631-640
- Publication Year :
- 2017
- Publisher :
- American Speech Language Hearing Association, 2017.
-
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.
- Subjects :
- Adult
Male
Special Issue: Selected Papers From the 2016 Conference on Motor Speech—Clinical Science and Implications
Linguistics and Language
medicine.medical_specialty
Apraxias
Computer science
Speech recognition
Motor Activity
Audiology
Speech Sound Disorder
Apraxia
Speech Acoustics
Diagnosis, Differential
Young Adult
030507 speech-language pathology & audiology
03 medical and health sciences
Speech and Hearing
0302 clinical medicine
Speech Production Measurement
Phonetics
Predictive Value of Tests
Distortion
Aphasia
Developmental and Educational Psychology
medicine
Humans
Speech
Cerebrum
Aged
Aged, 80 and over
Reproducibility of Results
Middle Aged
medicine.disease
Paraphasia
Otorhinolaryngology
Speech sound disorder
Female
medicine.symptom
0305 other medical science
030217 neurology & neurosurgery
Subjects
Details
- ISSN :
- 15589110 and 10580360
- Volume :
- 26
- Database :
- OpenAIRE
- Journal :
- American Journal of Speech-Language Pathology
- Accession number :
- edsair.doi.dedup.....dd7853c125dcc4e958fce39ddc71fd8a