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There are many potential sources of variability in speech production, particularly in individuals with dysarthria. The degree and time course of stabilization of the speech production system during recovery from a neurological insult is not constant across individuals. Another source of variability in speech production is speaking rate. Although individuals(More)
The ability of excellent esophageal speakers to manipulate acoustical characteristics associated with intended syllabic stress was studied. Five excellent esophageal speakers and five sex- and age-matched normals produced 10 sentence pairs, each containing a bisyllabic stimulus item differing only in primary stress placement. The mean fundamental frequency,(More)
Objective measures of nonspeech orofacial strength and force control were obtained for 20 individuals with traumatic brain injury. The dynamic and static force generating abilities of the upper lip, lower lip, tongue, and jaw were assessed. Based on sentence intelligibility scores, the subjects were divided into two groups, more and less intelligible. Force(More)
Past research regarding singing ability has provided evidence that both supports and refutes a relationship between pitch discrimination ability and pitch production ability. Researchers have suggested that these skills improve with age. Despite this suggestion, most investigators studying singing ability have included only children as participants.(More)
Management of unintelligible speech following traumatic brain injury is complex. In addition to multiple physiological system deficits, individuals typically present with complicating non-speech factors that impede their progress. The present case study illustrates the influence on outcome of impaired speech physiology, reduced cognitive abilities,(More)
Data were obtained from 31 subjects who had incurred a traumatic brain injury (TBI). Two expert listeners judged nasality using direct magnitude estimation with a referent. They rated samples of the first sentence of the Rainbow Passage, played backwards, with all pauses removed. Sensitivity was good for nasalance, velopharyngeal airway resistance, and(More)
The vocal symptoms of spastic dysarthria and spasmodic dysphonia have many similar features. Botulinum toxin has been used effectively to treat spasmodic dysphonia. This study was designed to determine what vocal changes occur in an individual with spastic dysarthria following Botulinum toxin A injection into the thyroarytenoid muscles. Measures were(More)
Although actors and singers typically warm-up the voice before performing, little is known about the effects of vocal warm-up on the voice. This study was designed to determine the relative effectiveness of specific versus combined warm-up strategies on the voice by group comparison. Twenty participants, 10 male and 10 female actors, completed two warm-up(More)
OBJECTIVES This study was designed to assess the effect of age on orofacial force generation. STUDY DESIGN Forty women participated in a cross-sectional design, with 10 in each age group from 20 to 39, 40 to 59, 60 to 79, and 80 to 100 years of age. METHODS Measures of force generation were obtained for the upper lip, lower lip, tongue, and jaw. (More)