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Vocal Fold Collision Speed in vivo: The Effect of Loudness
- Source :
- Journal of Voice. 36:608-621
- Publication Year :
- 2022
- Publisher :
- Elsevier BV, 2022.
-
Abstract
- Summary Mechanical impact stress on the vocal fold surface, particularly when excessive, has been postulated to cause the so-called phonotraumatic tissue lesions, such as nodules and polyps. The collision stress between the vocal folds depends on the vocal fold velocity at the time of impact. Hence this vocal fold collision speed is a relevant parameter when considering biomechanical economy of phonation, especially in voice professionals needing a louder voice than normal. Combining a precise photometric measurement of glottal area and simultaneous measurements of translaryngeal impedance (electroglottogram) for identifying the time of the maximum rate of increase of vocal fold contact allows computing the vocal fold collision speed in a wide range of loudnesses. The vocal fold collision speed is - for modal voicing - always smaller than the maximum vocal fold velocity during the closing phase, but it strongly increases with intensity. Moreover, this increase shows a biphasic pattern, with a significant enhancement from a certain value of dB on. Understanding physiological variables that influence vocal fold collision forces provides relevant insight into the pathophysiology and the prevention of voice disorders associated with phonotraumatic vocal hyperfunction.
- Subjects :
- Glottis
Acoustics
Vocal Cords
Vibration
Loudness
030507 speech-language pathology & audiology
03 medical and health sciences
Speech and Hearing
0302 clinical medicine
Phonation
otorhinolaryngologic diseases
medicine
Humans
030223 otorhinolaryngology
Physics
Voice Disorders
Fold (geology)
respiratory system
Hyperfunction
LPN and LVN
Collision
medicine.anatomical_structure
Otorhinolaryngology
Vocal folds
Voice
0305 other medical science
Maximum rate
Subjects
Details
- ISSN :
- 08921997
- Volume :
- 36
- Database :
- OpenAIRE
- Journal :
- Journal of Voice
- Accession number :
- edsair.doi.dedup.....701391239fb1d86c0f45b2a377087e00