Study of Evaluation of Mucosal Wave Variation According to the Pitch by Biomechanical Analysis
1PhD student, ENT MD, Hospital Vithas Nuestra Señora de América de Madrid, Department of Otorhinolaryngology, 103-105 Arturo Soria St, 28043, Madrid,Spain; Universidad Europea de Madrid, Medical School, Tajo St, 28670, Villaviciosa de Odón, Madrid, Spain
2PhD, ENT MD, Hospital Vithas Nuestra Señora de América de Madrid, Department of Otorhinolaryngology, 103-105 Arturo Soria St, 28043, Madrid, Spain;Universidad Europea de Madrid, Medical School, Tajo St, 28670, Villaviciosa de Odón, Madrid, Spain
3Doctor of Medicine and Surgery, Professor of Human Anatomy and Embryology, Department of Medicine, Faculty of Biomedical and Health Sciences, Universidad Europea. S/N Calle Tajo (lg Bosque Campus Universitario), 28670, Villaviciosa de Odon, Madrid, Spain
Received Date: July 15, 2022; Published Date:August 02, 2022
Background and objectives: When an individual changes the pitch of their voice, their vocal folds undergo structural and dynamic variations
that produces not only a different sound but also a different vocal pattern and mucosal wave which should be detected accordingly by our analysis
tools. Thus, the objective of this work is to assess the changes observed in the correlate of the mucosal wave, in the open and closed phase, when
modifying the phonation mode.
Methods: The study analyzed the voice recordings of 160 subjects without voice pathology obtained from the Saarbrucker Stimmdatenbank Institut für Phonetik database. The biomechanical analysis of the voice samples evaluated was performed using the biomechanical analysis tool Voice Clinical Systems®. The selected voice samples were sent to the Voice Clinical Systems® virtual laboratory using the “Analysis for Research” option.
Results: The results show that there is a significant difference (p <0.001) in the mucosal wave values observed in the open and closed phase in relation to the pitch used by the subject. It can be seen how phonation in high tones modifies the biomechanical properties of the free edge and reduces the mucosal wave amplitude. Similarly, phonation in low tones results, regardless of the sex of the subject, in an increase in the mucosal wave effect (p <0.001). Finally, the amplitude of the mucosal wave in opening also shows higher values in the male group than in the female group for all frequencies.
Conclusion: It is important to find evaluation methods and tools that allow us to assess the mucosal wave in an objective and reliable way. The biomechanical analysis of the voice has shown its effectiveness in identifying the changes observed in the mucosal wave effect and derived from the modification of the phonatory pattern. A broader understanding of the mucosal waveform, which complements what is observed during the imaging examination, will help to characterize the voice pathology more precisely and guide towards a more effective treatment.
Keywords: Biomechanical analysis; Dysphonia; Voice pathology; Mucous wave