Given the importance of voice quality in signalling personal identity and social group membership, effective control of voice features may become especially important during adolescence, yet this has to be achieved in the context of significant physical changes within the speech production system. Most previous research has focussed on phonation, but this study used Vocal Profile Analysis (VPA)...

Phonetic disorders are errors of articulation and resonance phonemes, which, in the presence or absence organic changes phonoarticulatory organs, persist beyond acquisition perceptual articulatory skills. For correct production each vowel/consonant, structures apparatus come into contact a variable way, following finely coordinated movements, adopt certain position to allow emission sound. Orof...

OBJECTIVE To elucidate capabilities and limitations of the VocaLog, a device marketed to log-calibrated dB sound pressure level (SPL). STUDY DESIGN The study design varied depending on the experiment. All were prospective. Some were case series, and others were cohort studies without controls. METHOD Experiments were conducted to determine (1) whether the VocaLog logged phonatory activity a...

The physiological aim of vocal exercises is mostly understood in intuitive terms only. This article presents an attempt to document the phonatory behavior induced by a vocal exercise. An elevated vertical position of the larynx is frequently associated with hyperfunctional phonatory habits, presumably because it induces an exaggerated vocal fold adduction. Using the multichannel electroglottogr...

127 Restoration of vocal function with laryngeal framework surgery (laryngoplastic phonosurgery) was introduced at the beginning of the 20th century. Today, these procedures have emerged as the dominant surgical management approach for the treatment of the aerodynamic incompetence and acoustic deterioration associated with vocal fold paralysis/paresis. Other indications include cancer defects, ...

OBJECTIVES/HYPOTHESIS Vocal fold paresis and paralysis are common conditions. Treatment options include augmentation laryngoplasty and voice therapy. The optimal management for this condition is unclear. The objective of this study was to assess possible neuromuscular compensation mechanisms that could potentially be used in the treatment of vocal fold paresis and paralysis. STUDY DESIGN In v...

For measuring air usage during phonation, we recorded the air volume curve as a function of time during sustained phonation by using a spirometer coupled with a simple electrical device. As an indirect estimation of air usage, the phonation quotient (PQ) was also calculated from the vital capacity (VC) and the maximum phonation time (MPT) ; PQ=VC/MPT. This paper reports on a comparative study o...

OBJECTIVES/HYPOTHESIS The present study aims to evaluate the degree of anterior-posterior and medial supraglottic laryngeal compression in healthy singers of different voice classifications while singing different pitches, loudness, and phonatory tasks. STUDY DESIGN Prospective study. METHODS Thirty-six classically trained singers (11 sopranos, 11 mezzo-sopranos, six tenors, and eight barit...

OBJECTIVES Most cases of irresolvable hoarseness are due to deficiencies in the pliability and volume of the superficial lamina propria of the phonatory mucosa. By using a US Food and Drug Administration-approved polymer, polyethylene glycol (PEG), we created a novel hydrogel (PEG30) and investigated its effects on multiple vocal fold structural and functional parameters. METHODS We injected ...

OBJECTIVE To analyze laryngeal aerodynamics in the same patient in 4 different circumstances: before the onset of unilateral vocal fold paralysis (UVFP), after the onset of UVFP, and after 2 types of surgical vocal fold medialization techniques to compare the results of surgery with the measurements made in that same patient when his larynx was healthy (before paralysis). DESIGN Prospective s...