Vocal learners such as humans and songbirds can learn to produce elaborate patterns of structurally organized vocalizations, whereas many other vertebrates such as non-human primates and most other bird groups either cannot or do so to a very limited degree. To explain the similarities among humans and vocal-learning birds and the differences with other species, various theories have been propo...

INTRODUCTION Arytenoid adduction (AA) is a type of approximation laryngoplasty for unilateral vocal-fold paralysis (UVFP) patients that was firstly introduced by Morrison in 1948. The main mechanism for this procedure is vocal fold repositioning by means of pulling the muscular process of the arytenoid cartilage in the direction of the lateral cricoarytenoid (LCA) muscle. AA is especially usefu...

Ventricular fold phonation (VFP) is a phenomenon characterized by phonation using the false vocal folds. Besides a substitution voice due to loss of the true vocal folds-so called compensatory type-the noncompensatory types have a psychogenic, functional, or habitual background. Therapeutic options for these cases so far comprise voice therapy, pharmacological therapy (injection of anesthetics ...

How does it work? Although the adjustment of vocal intensity happens involuntarily when background noise levels change, the phenomenon is not truly a reflex. Much of what we do know about how the Lombard effect works at a neural level comes from comparative work on non-human primates and other mammals. From these studies we learn that the essential circuits responsible for the Lombard effect ar...

Injuries of the vocal folds frequently heal with scar formation, which can have lifelong detrimental impact on voice quality. Current treatments to prevent or resolve scars of the vocal fold mucosa are highly unsatisfactory. In contrast, the adjacent oral mucosa is mostly resistant to scarring. These differences in healing tendency might relate to distinct properties of the fibroblasts populati...

introduction: actinomycosis is a systemic chronic bacterial infection caused by actinomyces israelii, an anaerobic organism normally resident in the human mouth. however, the actinomycosis of the larynx is very rare, and only about 15 cases have been reported in the literature so far. most of the cases reported occurred in patients who had previously undergone radiotherapy for laryngeal cancer....

RESUMO Objetivo investigar a ocorrência de queixa vocal autorreferida no uso profissional da voz em atores profissionais teatro; correlacionar presença com três protocolos autoavaliação do impacto uma alteração vocal: Escala Sintomas Vocais (ESV), Desconforto Trato Vocal (EDTV) e Índice Desvantagem -10 (IDV-10); verificar quais são mais robustos à detecção possível disfonia nessa população. Mét...

ABSTRACT Dynamic vocal analysis (DVA) is an auditory-perceptual and acoustic assessment strategy that provides estimates on the biomechanics aerodynamics of production by performing frequency intensity variation tasks using voice spectrography. The objective this experience report to demonstrate use DVA in functionality dysphonic non-dysphonic individuals, with a special focus laryngeal muscula...