Relations between segmental and motor variability in prosodically complex nonword sequences

Lisa Goffman, Louann Gerken, Julie Lucchesi

Research output: Contribution to journalArticle

34 Citations (Scopus)

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 languageEnglish (US)
Pages (from-to)444-458
Number of pages15
JournalJournal of Speech, Language, and Hearing Research
Volume50
Issue number2
DOIs
StatePublished - Apr 1 2007

Fingerprint

Foot
Lip
Jaw
Young Adult
Language
Nonwords
young adult
Group
Trajectory
language

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 journalArticle

@article{d94c3e0d39404974a0b0ea3acf0507df,
title = "Relations between segmental and motor variability in prosodically complex nonword sequences",
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.",
keywords = "Nonword repetition, Prosody, Specific language impairment, Speech motor control, Variability",
author = "Lisa Goffman and Louann Gerken and Julie Lucchesi",
year = "2007",
month = "4",
day = "1",
doi = "10.1044/1092-4388(2007/031)",
language = "English (US)",
volume = "50",
pages = "444--458",
journal = "Journal of Speech, Language, and Hearing Research",
issn = "1092-4388",
publisher = "American Speech-Language-Hearing Association (ASHA)",
number = "2",

}

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

UR - http://www.scopus.com/inward/record.url?scp=34250840653&partnerID=8YFLogxK

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 -