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Titolo:
EFFECTS OF LINGUISTIC CORRELATES OF STUTTERING ON EMG ACTIVITY IN NONSTUTTERING SPEAKERS
Autore:
VANLIESHOUT PHHM; STARKWEATHER CW; HULSTIJN W; PETERS HFM;
Indirizzi:
NIJMEGEN INST COGNIT & INFORMAT,KUN POB 9104 6500 HE NIJMEGEN NETHERLANDS TEMPLE UNIV,DEPT SPEECH HEARING LANGUAGE PHILADELPHIA PA 19122 CATHOLIC UNIV NIJMEGEN NIJMEGEN NETHERLANDS UNIV HOSP NIJMEGEN,DEPT VOICE & SPEECH DISORDERS NIJMEGEN NETHERLANDS
Titolo Testata:
Journal of speech and hearing research
fascicolo: 2, volume: 38, anno: 1995,
pagine: 360 - 372
SICI:
0022-4685(1995)38:2<360:EOLCOS>2.0.ZU;2-0
Fonte:
ISI
Lingua:
ENG
Soggetto:
LOWER-LIP; SENTENCE LENGTH; VOWEL DURATION; FLUENT SPEECH; ENGLISH; SIGNALS;
Keywords:
SPEECH MOTOR PHYSIOLOGY; SPEECH MOTOR CONTROL; STUTTERING; LINGUISTIC EFFECTS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Physical, Chemical & Earth Sciences
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
P.H.H.M. Vanlieshout et al., "EFFECTS OF LINGUISTIC CORRELATES OF STUTTERING ON EMG ACTIVITY IN NONSTUTTERING SPEAKERS", Journal of speech and hearing research, 38(2), 1995, pp. 360-372

Abstract

In this study changes in upper lip and lower lip integrated electromyographic (IEMG) amplitude and temporal measures related to linguistic factors known for their influence on stuttering were investigated. Nonstuttering subjects first read and then verbalized sentences of varying length (sentence length factor), in which meaningless but phonologically appropriate character strings were varied in their position within the sentence (word position factor) and their size (word size factor). It was hypothesized that the production of stressed, vowel-roundinggestures of words in initial position, longer words, and words in longer sentences would be characterized by specific changes in IEMG amplitude that would reflect an increase in speech motor demands, intuitively defined as articulatory effort. Basically, the findings corroborated our assumptions, showing that words in sentence initial position have shorter word and vowel durations in combination with an increase in IEMG activity. Similarly, we found shorter vowel durations for longer words, and in sentence final position an increase in IEMG activity. For longer sentences we found a clear increase in speech rate, but contrary to our expectations a decrease in IEMG activity. It was speculatedthat this might relate to the use of a movement reduction strategy toallow higher speech rates with increased coarticulation. These findings were discussed both for their implications in normal speech production, as well as for their possible implications for explaining stuttering behavior. To this end our data can illustrate both why stutterers might run a higher risk of stuttering at these linguistic loci of stuttering, and why they might come up with a strategic solution to decrease the motor demands in speech production. The basic outcome of this study shows that higher order (linguistic) specifications can have clear effects on speech motor production.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 10/07/20 alle ore 02:06:46