Abstract
Purpose: To assess how prosodic prominence and hierarchical foot structure influence segmental and articulatory aspects of speech production, specifically segmental accuracy and variability, and oral movement trajectory variability. Method: Thirty individuals participated: 10 young adults, 10 children who are normally developing, and 10 children diagnosed with specific language impairment. Segmental error and segmental variability and movement trajectory variability were compared in low and high prosodic prominence conditions (i.e., strong and weak syllables) and in different prosodic foot structures. Results: Between-participants findings were that both groups of children showed more segmental error and segmental variability and more movement trajectory variability than did adults. A similar within-participant pattern of results was observed for all 3 groups. Prosodic prominence influenced both segmental and motor levels of analysis, with weak syllables produced less accurately and with more lip and jaw movement trajectory variability than strong syllables. However, hierarchical foot structure affected segmental but not motor measures of speech production accuracy and variability. Conclusions: Motor and segmental variables were not consistently aligned. This pattern of results has clinical implication because inferences about motor variability may not directly follow from observations of segmental variability.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 444-458 |
| Number of pages | 15 |
| Journal | Journal of Speech, Language, and Hearing Research |
| Volume | 50 |
| Issue number | 2 |
| DOIs | |
| State | Published - Apr 1 2007 |
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Keywords
- Nonword repetition
- Prosody
- Specific language impairment
- Speech motor control
- Variability
ASJC Scopus subject areas
- Rehabilitation
- Health Professions(all)
- Linguistics and Language
Cite this
Relations between segmental and motor variability in prosodically complex nonword sequences. / Goffman, Lisa; Gerken, Louann; Lucchesi, Julie.
In: Journal of Speech, Language, and Hearing Research, Vol. 50, No. 2, 01.04.2007, p. 444-458.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Relations between segmental and motor variability in prosodically complex nonword sequences
AU - Goffman, Lisa
AU - Gerken, Louann
AU - Lucchesi, Julie
PY - 2007/4/1
Y1 - 2007/4/1
N2 - Purpose: To assess how prosodic prominence and hierarchical foot structure influence segmental and articulatory aspects of speech production, specifically segmental accuracy and variability, and oral movement trajectory variability. Method: Thirty individuals participated: 10 young adults, 10 children who are normally developing, and 10 children diagnosed with specific language impairment. Segmental error and segmental variability and movement trajectory variability were compared in low and high prosodic prominence conditions (i.e., strong and weak syllables) and in different prosodic foot structures. Results: Between-participants findings were that both groups of children showed more segmental error and segmental variability and more movement trajectory variability than did adults. A similar within-participant pattern of results was observed for all 3 groups. Prosodic prominence influenced both segmental and motor levels of analysis, with weak syllables produced less accurately and with more lip and jaw movement trajectory variability than strong syllables. However, hierarchical foot structure affected segmental but not motor measures of speech production accuracy and variability. Conclusions: Motor and segmental variables were not consistently aligned. This pattern of results has clinical implication because inferences about motor variability may not directly follow from observations of segmental variability.
AB - Purpose: To assess how prosodic prominence and hierarchical foot structure influence segmental and articulatory aspects of speech production, specifically segmental accuracy and variability, and oral movement trajectory variability. Method: Thirty individuals participated: 10 young adults, 10 children who are normally developing, and 10 children diagnosed with specific language impairment. Segmental error and segmental variability and movement trajectory variability were compared in low and high prosodic prominence conditions (i.e., strong and weak syllables) and in different prosodic foot structures. Results: Between-participants findings were that both groups of children showed more segmental error and segmental variability and more movement trajectory variability than did adults. A similar within-participant pattern of results was observed for all 3 groups. Prosodic prominence influenced both segmental and motor levels of analysis, with weak syllables produced less accurately and with more lip and jaw movement trajectory variability than strong syllables. However, hierarchical foot structure affected segmental but not motor measures of speech production accuracy and variability. Conclusions: Motor and segmental variables were not consistently aligned. This pattern of results has clinical implication because inferences about motor variability may not directly follow from observations of segmental variability.
KW - Nonword repetition
KW - Prosody
KW - Specific language impairment
KW - Speech motor control
KW - Variability
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UR - http://www.scopus.com/inward/citedby.url?scp=34250840653&partnerID=8YFLogxK
U2 - 10.1044/1092-4388(2007/031)
DO - 10.1044/1092-4388(2007/031)
M3 - Article
C2 - 17463240
AN - SCOPUS:34250840653
VL - 50
SP - 444
EP - 458
JO - Journal of Speech, Language, and Hearing Research
JF - Journal of Speech, Language, and Hearing Research
SN - 1092-4388
IS - 2
ER -