Afferent and Efferent Aspects of Mandibular Sensorimotor Control in Adults Who Stutter

Autor/inn/en	Daliri, Ayoub; Prokopenko, Roman A.; Max, Ludo
Titel	Afferent and Efferent Aspects of Mandibular Sensorimotor Control in Adults Who Stutter
Quelle	In: Journal of Speech, Language, and Hearing Research, 56 (2013) 6, S.1774-1788 (15 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2013/12-0134)
Schlagwörter	Stuttering; Adults; Kinesthetic Perception; Perceptual Motor Coordination; Human Body; Correlation; Statistical Significance; Neurology; Accuracy + Suchen Sie Ihr Suchwort? Stammer; Stottern; Kinaesthetic perception; Ästhetische Wahrnehmung; Körperkoordination; Menschlicher Körper; Korrelation; Neurologie
Abstract	Purpose: Individuals who stutter show sensorimotor deficiencies in speech and nonspeech movements. For the mandibular system, the authors dissociated the sense of kinesthesia from the efferent control component to examine whether kinesthetic integrity itself is compromised in stuttering or whether deficiencies occur only when generating motor commands. Method: The authors investigated 11 stuttering and 11 nonstuttering adults' kinesthetic sensitivity threshold and kinesthetic accuracy for passive jaw movements as well as their minimal displacement threshold and positioning accuracy for active jaw movements. They also investigated the correlation with an anatomical index of jaw size. Results: The groups showed no statistically significant differences on sensory measures for passive jaw movements. Although some stuttering individuals performed more poorly than any nonstuttering participants on the active movement tasks, between-group differences for active movements were not statistically significant. Unlike fluent speakers, however, the stuttering group showed a statistically significant correlation between mandibular size and performance in the active and passive near-threshold tasks. Conclusions: Previously reported minimal-movement differences were not replicated. Instead, stuttering individuals' performance varied with anatomical properties. These correlational results are consistent with the hypothesis that stuttering participants generate and perceive movements on the basis of less accurate internal models of the involved neuromechanical systems. (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10