PURPOSE Although speech motor changes are reported as a common sign of Huntington's disease (HD), the most prominent signs of voice dysfunction remain unknown. The aim of the current study was to explore specific changes in phonatory function in subjects with HD. METHOD 34 subjects with HD and 34 age- and sex-matched healthy controls were examined. Participants performed sustained vowel phona...

MOTIVATION Human voice is generated in the larynx by the two oscillating vocal folds. Owing to the limited space and accessibility of the larynx, endoscopic investigation of the actual phonatory process in detail is challenging. Hence the biomechanics of the human phonatory process are still not yet fully understood. Therefore, we adapt a mathematical model of the vocal folds towards vocal fold...

PURPOSE To develop a predictive model of speech loss in persons with amyotrophic lateral sclerosis (ALS) based on measures of respiratory, phonatory, articulatory, and resonatory functions that were selected using a data-mining approach. METHOD Physiologic speech subsystem (respiratory, phonatory, articulatory, and resonatory) functions were evaluated longitudinally in 66 individuals with ALS...

The case is described of a 58-year-old male with cord paralysis submitted to Montgomery thyroplasty, attention being focused on the electro-acoustical findings. The usefulness is underlined of these indices which provide the opportunity to establish the phonatory advantages and results of this surgical procedure: Videolaryngostroboscopy and spectrographic analyses were carried out before and af...

The purpose of this work is to evaluate and to compare the acoustic properties of oesophageal voice and voice prosthesis speech production. A group of 14 Italian laryngectomized patients were considered: 7 with oesophageal voice and 7 with tracheoesophageal voice (with phonatory valve). For each patient the spectrogram obtained with the phonation of vowel /a/ (frequency intensity, jitter, shimm...

The purpose of the presentation is to give an overview of phonatory features of disordered voices and propose a classificatory framework. Generally speaking, phonatory features are numerical cues that summarize properties of speech signals or other voicerelated signals that are obtained noninvasively, and which are clinically relevant. The object of a classificatory framework is to ease the pla...