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The reliability of listeners' ratings of voice quality is a central issue in voice research because of the clinical primacy of such ratings and because they are the standard against which other measures are evaluated. However, an extensive literature review indicates that both intrarater and interrater reliability fluctuate greatly from study to study.(More)
In an effort to evaluate the effect of normal aging on oropharyngeal events of swallowing, 80 normal volunteers, stratified by gender into four age groups, were studied. Liquid and semisolid swallows were performed and recorded simultaneously using videofluoroscopy and manometry. Several parameters, including total duration of oropharyngeal swallowing, were(More)
Voice onset time (VOT) and vowel duration characteristics of speakers following the Singer-Blom technique of tracheoesophageal puncture (1980) were compared to those of traditional esophageal and laryngeal speakers. Fifteen subjects in each of the three speaker groups produced the words /pik/, /kap/, /kup/ in a carrier phrase while audio recordings were(More)
We report differential patterns of swallowing in 40 patients with their first ischemic middle cerebral artery (MCA) stroke and compare these to 20 nonstroke controls. Stroke patients were divided a priori, into groups by right or left and, post hoc, primarily anterior or posterior MCA territory lesions. The left hemisphere subgroup was differentiated from(More)
The objective of this research was to identify perceptually relevant features of 30 dysphonic female voices. The perceptual dimensions used by listeners in judging the similarity of the dysphonic voices were derived in two multidimensional scaling (MDS) procedures using ALSCAL. Three dimensions were extracted in each MDS solution and accounted for(More)
Twelve male and 12 female total laryngectomy patients who received the tracheoesophageal puncture (TEP) as a means of vocal rehabilitation served as subjects for this investigation. Recordings were made of these subjects' speech produced with four prosthetic/occlusion conditions: (1) duckbill prosthesis with tracheostoma valve; (2) duckbill prosthesis with(More)
This investigation was designed to measure voice Fo changes related to single motor unit (SMU) contractions in the cricothyroid and thyroarytenoid muscles. Four subjects (3 men and 1 woman) were recorded producing a prolonged vowel at modal pitch and loudness levels while simultaneous recordings of electromyograms (EMG) from the muscles were obtained. Voice(More)
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