Phonation threshold pressures were directly measured in five normal subjects in a variety of voicing conditions. The effects of fundamental frequency, intensity, closure speed of the vocal folds, and laryngeal airway resistance on phonation threshold pressures were determined. Subglottic air pressures were measured using percutaneous puncture of the cricothyroid membrane. Both onset and offset of phonation were studied to see if a hysteresis effect produced lower offset pressures than onset pressures. Univariate analysis showed that phonation threshold pressure was influenced most strongly by fundamental frequency and intensity. Multiple linear regression showed that these two variables, as well as laryngeal airway resistance, most strongly predicted phonation threshold pressure. Two of the five subjects demonstrated a significant hysteresis effect, but one subject actually had higher offset pressures than onset pressures.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1121/1.1812309 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Respiratory Responses to Vocal Demand Tasks: A Scoping Review.
J Voice
November 2024
Department of Communicative Disorders and Sciences, College of Arts and Sciences, University of Buffalo, Buffalo, NY.
Article Synopsis
- - This study aims to identify effective measures for assessing vocal fatigue as well as tasks that can trigger this fatigue in individuals.
- - A review of 17 studies found that phonation threshold pressure (PTP) is the most reliable measure for detecting vocal fatigue, especially in vocally healthy individuals.
- - The research suggests that while short-duration tasks can effectively elicit vocal fatigue, there is a need for more investigation into respiratory patterns, ventilation, and their implications for those experiencing vocal fatigue.
Does the type of cleft have an impact on language results? Validation of the Nasalance test in French.
J Stomatol Oral Maxillofac Surg
November 2024
Service de chirurgie maxillofaciale et chirurgie plastique, APHP, Necker Enfants-Malades, Paris 75015, France; Centre de Référence des Fentes et Malformations Faciales, APHP, Necker Enfants-Malades, Paris 75015, France; Université de Paris, UFR de Médecine, Paris 75006, France. Electronic address:
Objectives: The nasometer is the most widely used tool for objective assessment of phonation in both research and clinical practice. French standards have been validated in cases of total cleft lip and palate. The objective of this research is to propose a second validation study on velopalatal clefts.
View Article and Find Full Text PDFAerodynamic Threshold Measures for Reflecting Glottal Closure in Voice Disorders.
J Speech Lang Hear Res
January 2025
Department of Respiratory Medicine, Second Affiliated Hospital, Xiamen Medical College, China.
Purpose: Previous work suggested that phonation threshold pressure (PTP), phonation threshold flow (PTF), and phonation threshold power (PTW) could be effective aerodynamic measures for quantifying glottal incompetence. This study examined how these measures could reflect varying extent of incomplete glottal closure in individuals with voice disorders.
Method: Thirty individuals formally diagnosed with glottal incompetence, including 10 with hypofunctional disorders (hypo group) and 20 with hyperfunctional disorders (hyper group), and 30 individuals with normal voice (control group) participated in the study.
Effectiveness of Singing-Based Therapy on Voice Outcomes in Parkinson's Disease: A Systematic Review and Meta-Analysis.
J Voice
November 2024
Department of Otolaryngology, Head and Neck Surgery, College of Medicine, King Abdulaziz University, Jeddah, Saudi Arabia.
Background: Communication impairments significantly impact the quality of life for individuals with Parkinson's disease (PD), underscoring the need for effective interventions. Singing, by engaging shared neural networks and structural mechanisms involved in speech production, holds therapeutic potential for addressing speech disorders in this population. This study explores the effects of singing-based therapeutic intervention on voice in patients diagnosed with PD.
View Article and Find Full Text PDFA Methodology to Quantify the Effective Vertical Thickness of Prephonatory Vocal Fold Medial Surface.
J Voice
October 2024
Department of Head and Neck Surgery, University of California, Los Angeles, Los Angeles, California. Electronic address:
Objective: The shape of the vocal fold medial surface, particularly its vertical thickness, has been shown in computational and physical modeling studies to be highly influential in regulating glottal closure during phonation. However, because of the difficulty to quantify the vertical thickness in real vocal folds, this influence has often been overlooked in clinical contexts. Therefore, the goal of this study is to present a method to calculate an effective vertical thickness of the medial surface that is predictive of the glottal closure pattern during phonation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!