scholarly journals Acoustic Correlates of Compensatory Adjustments to the Glottic and Supraglottic Structures in Patients with Unilateral Vocal Fold Paralysis

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Luis M. T. Jesus ◽  
Joana Martinez ◽  
Andreia Hall ◽  
Aníbal Ferreira
Keyword(s):  
Standard Deviation ◽  
Fundamental Frequency ◽  
Vocal Fold ◽  
Normal Subjects ◽  
Vocal Fold Paralysis ◽  
Limited Information ◽  
Unilateral Vocal Fold Paralysis ◽  
Acoustic Correlates ◽  
Noise Ratio

The goal of this study was to analyse perceptually and acoustically the voices of patients with Unilateral Vocal Fold Paralysis (UVFP) and compare them to the voices of normal subjects. These voices were analysed perceptually with the GRBAS scale and acoustically using the following parameters: mean fundamental frequency (F0), standard-deviation ofF0, jitter (ppq5), shimmer (apq11), mean harmonics-to-noise ratio (HNR), mean first (F1) and second (F2) formants frequency, and standard-deviation ofF1 andF2 frequencies. Statistically significant differences were found in all of the perceptual parameters. Also the jitter, shimmer, HNR, standard-deviation ofF0, and standard-deviation of the frequency ofF2 were statistically different between groups, for both genders. In the male data differences were also found inF1 andF2 frequencies values and in the standard-deviation of the frequency ofF1. This study allowed the documentation of the alterations resulting from UVFP and addressed the exploration of parameters with limited information for this pathology.

Vocal Fold Vibration in Older Adults With and Without Age-Related Dysphonia

2018 ◽  
Vol 27 (3) ◽  
pp. 1039-1050 ◽  
Author(s):  
Robin A. Samlan ◽  
Melda Kunduk ◽  
Takeshi Ikuma ◽  
Mindy Black ◽  
Christianne Lane
Keyword(s):  
Older Adults ◽  
Standard Deviation ◽  
Fundamental Frequency ◽  
Vocal Fold ◽  
Normal Aging ◽  
Control Group ◽  
Maximum Area ◽  
Vocal Fold Vibration ◽  
Age Related ◽  
Noise Ratio

Purpose The purpose of this study was to identify the extent to which 7 measures of glottal area timing and regularity differ between older adults with and without age-related dysphonia (ARD). Method Laryngeal high-speed videoendoscopy was completed at 4,000 frames per second for 42 adults aged 70 years and older (ARD: 9 female, 5 male; control group: 15 female, 13 male). Relative glottal gap, open quotient, speed index, maximum area declination rate, harmonics-to-noise ratio, harmonic richness factor, and standard deviation of fundamental frequency were measured from a 0.5-s segment of the glottal area waveform. Eta squared (η 2 ) was computed to estimate group effect. Results Small effect sizes (η 2 = .18–.35) were present for relative glottal gap, open quotient, maximum area declination rate, harmonic richness factor, and standard deviation of fundamental frequency. Speed index and glottal harmonics-to-noise ratio did not explain group membership (η 2 = .001 and .05, respectively). Conclusion These findings provide evidence that vocal fold vibration in ARD is different than in normal aging, whereas the overlap in values for every measure is consistent with the concept that normal aging and ARD exist as a continuum of health and disease.

Acoustic Characteristics of Post-Thyroplasty Patients

1992 ◽  
Vol 107 (4) ◽  
pp. 558-563 ◽  
Author(s):  
Gary R. Lablance ◽  
Michael D. Maves
Keyword(s):  
Fundamental Frequency ◽  
Vocal Fold ◽  
Voice Quality ◽  
Vocal Fold Paralysis ◽  
Type I ◽  
Unilateral Vocal Fold Paralysis ◽  
Pitch Range ◽  
Acoustic Characteristics ◽  
Maximum Phonation Time ◽  
Frequency Changes

This study investigated changes in voice quality after thyroplasty type I in eight adults with unilateral vocal fold paralysis. A silicone rubber implant was inserted through a window in the thyroid ala and placed between the inner and outer perichondrium to externally medialize the abducted vocal fold. Measures of fundamental frequency (vocal pitch), pitch range, maximum phonation time, s/z ratio, pitch perturbation (vocal jitter), and amplitude perturbation (vocal shimmer) were made 1 to 2 weeks preoperatively and 1 month postoperatively. Postoperative voice quality was characterized by an improved pitch range, phonation time, s/z ratio, and pitch and amplitude perturbation. No change was noted in fundamental frequency. Changes in postoperative voice quality were unrelated to the subjects' preoperative age, sex, etiology, and duration of the paralysis.

scholarly journals Modified Arytenoid Adduction Operation for the Treatment of Unilateral Vocal Fold Paralysis

ORL ◽  
2021 ◽  
pp. 1-6
Author(s):  
Chao Liu ◽  
Yuanzheng Qiu ◽  
Xin Zhang ◽  
Yong Liu ◽  
Guo Li ◽  
...  
Keyword(s):  
Postoperative Complications ◽  
Fundamental Frequency ◽  
Vocal Fold ◽  
Thyroid Cartilage ◽  
Vocal Fold Paralysis ◽  
Subjective Perception ◽  
Unilateral Vocal Fold Paralysis ◽  
Mean Values ◽  
Arytenoid Adduction ◽  
The Voice

<b><i>Introduction:</i></b> Unilateral vocal fold paralysis (UVFP) was a relative common glottic insufficiency disease; however, a completely satisfactory treatment of UVFP was elusive. This study was aimed to evaluate the surgical efficacy of modified arytenoid adduction with fenestration of the thyroid cartilage in the management of patients with UVFP, including voice and aspiration outcomes, and to summarize the postoperative complications. <b><i>Methods:</i></b> A retrospective analysis was performed on a total of 21 patients who underwent modified arytenoid adduction operation with fenestration of the thyroid cartilage for UVFP from July 2012 to June 2017. The scores of Grade, Roughness, Breathiness, Asthenia, Strain scale (GRBAS), voice self-satisfaction, dynamic laryngoscopy and the voice acoustic data (fundamental frequency [F0], fundamental frequency perturbation [jitter], loudness, amplitude perturbation [shimmer], and maximal phonatory time [MPT], etc.) were statistically analyzed preoperatively and 3–6 months postoperatively. The occurrence of postoperative complications was also summarized. <b><i>Results:</i></b> The voice subjective perception of 21 patients was significantly improved after operation. The rate of voice self-satisfaction was 90.5%. The mean values of voice acoustics parameters were significantly improved. The MPT was significantly longer (<i>p</i> &#x3c; 0.001), and the ratings of postoperative aspiration were significantly decreased compared with the preoperation. Among the 21 patients, 15 cases had sense of laryngeal obstruction, 8 cases had of 1–2° laryngemphraxis (recovered after 10–15 days). There were 2 cases of laryngeal stridor, 1 case of incision infection, 1 case of pharyngeal fistula, and 1 case of falsetto (corrected by voice training). No patient had laryngeal hematoma, neck hematoma, or laryngospasm. <b><i>Conclusion:</i></b> The modified arytenoid adduction operation with fenestration of the thyroid cartilage can significantly improve the vocal function of patients with UVFP and effectively reduce the aspiration, with fewer postoperative complications, less trauma, and more convenient advantages.

Evaluation of 18F-fluorodeoxyglucose Accumulation in the Larynx of Unilateral Vocal Fold Paralysis Cases

2011 ◽  
Vol 62 (1) ◽  
pp. 11-16
Author(s):  
Yoshitsugu Nimura ◽  
Masahiko Higashikawa ◽  
Terue Okamura ◽  
Ken Nakai ◽  
Kengo Ichihara ◽  
...  
Keyword(s):  
Vocal Fold ◽  
Vocal Fold Paralysis ◽  
Unilateral Vocal Fold Paralysis ◽  
18F Fluorodeoxyglucose
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