Aerodynamic Functions in Fluent Speech Utterances of Stutterers and Nonstutterers in Different Speech Conditions

  • Herman F. M. Peters
  • Louis Boves


The production of fluent speech requires a precise coordination of respiratory, phonatory and articulatory manoeuvres. A number of authors (Van Riper, 1982; Adams, 1974; Wingate, 1976; Agnello, 1975), have suggested that the failure to coordinate expiratory actions and global adjustment of the laryngeal musculature in preparation for phonation is a major cause of disfluencies in stuttering. This suggestion seems to be substantiated by recent experimental work of Conture (1977), Freeman (1979), Shapiro (1980) and Yoshioka and Löfqvist (1981), who reported substantial differences in laryngeal activity between nonstutterers and stutterers when producing auditorily fluent utterances. Although there is general agreement on the fact that subglottal pressure must be increased to a certain level before phonation can start, very little is known about the details of the way in which the pressure is controlled. This applies equally to normal speech production and speech production of stutterers. Obviously, there may be interactions between laryngeal behavior preceding phonation and the control of subglottal pressure. In this contribution we will deal with both aspects, but the attention will be focussed on the control of subglottal pressure.


Vocal Fold Speech Production Articulatory Effort Normal Speech Speech Condition 
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© Springer-Verlag/Wien 1987

Authors and Affiliations

  • Herman F. M. Peters
  • Louis Boves

There are no affiliations available

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