Changes in normal speech after fatiguing the tongue.
Detrimental effects of tongue fatigue on speech have been assumed to exist based on neuromotor speech disorders. However, to address whether fatigue is a contributing cause to impaired speech requires an experimental protocol with an uncomplicated population. This study induced tongue fatigue in eig...
| Publicado en: | Journal of Speech, Language & Hearing Research Vol. 43; no. 6; pp. 1416 - 1429 |
|---|---|
| Autor principal: | |
| Formato: | Artículo |
| Publicado: |
American Speech-Language-Hearing Association
December 2000
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ssf&AN=507737585&site=ehost-live header: @attributes: shortDbName: ssf uiTerm: 507737585 longDbName: Social Sciences Full Text (H.W. Wilson) uiTag: AN controlInfo: bkinfo: jinfo: jid: 10924388 1SM jtl: Journal of Speech, Language & Hearing Research issn: 10924388 maglogo: N pubinfo: dt: December 2000 vid: 43 iid: 6 pid: 42 pub: American Speech-Language-Hearing Association artinfo: ui: 507737585 ppf: 1416 ppct: 13 formats: fmt: – @attributes: type: T – @attributes: type: P size: 2MB tig: atl: Changes in normal speech after fatiguing the tongue. aug: au: Solomon, Nancy Pearl su: Physiological aspects of speech Fatigue (Physiology) Tongue sug: subj: Physiological aspects of speech Fatigue (Physiology) Tongue ab: Detrimental effects of tongue fatigue on speech have been assumed to exist based on neuromotor speech disorders. However, to address whether fatigue is a contributing cause to impaired speech requires an experimental protocol with an uncomplicated population. This study induced tongue fatigue in eight neurologically normal persons and examined changes in speech perceptually and acoustically. The fatigue task consisted of repeated cycles of 6 s of sustained maximum voluntary contraction and 4 s of rest until 50IX% of maximum strength could not be achieved for three consecutive cycles. Participants then produced speech that was weighted heavily with lingual-palatal consonants. Perceptual analyses of the speech revealed a statistically significant deleterious effect of induced tongue fatigue on speech precision and an incomplete reversal of this effect after a recovery period. Acoustically, the first and third spectral moments (mean and skewness) of the spectral energy for /t/, /s/, and /IMI/ differed significantly after fatigue but in directions opposite to a priori predictions. Tendencies were found for decreased stop-closure duration and increased voice onset time for /t/ after fatigue. Supplemental analyses revealed decreased second formant (F2) frequency for /u/ and /i/ and flattened F2 transition for the diphthong /ITSI/ after fatigue. These results indicate disruption of tongue positioning and transitioning for lingual-palatal consonants during speech after prolonged strenuous tongue exercises. Reprinted by permission of the publisher. Reprinted by permission of the publisher. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: N holdings: @attributes: islocal: N |
|---|