Vocal Fold Vibration in Older Adults With and Without Age-Related Dysphonia 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 ... Research Article
Newly Published
Research Article  |   June 21, 2018
Vocal Fold Vibration in Older Adults With and Without Age-Related Dysphonia
 
Author Affiliations & Notes
  • Robin A. Samlan
    Department of Speech, Language, & Hearing Sciences, University of Arizona, Tucson
    Department of Otolaryngology Head & Neck Surgery, University of Arizona College of Medicine, Tucson
  • Melda Kunduk
    Department of Communication Sciences & Disorders, Louisiana State University, Baton Rouge
  • Takeshi Ikuma
    Department of Otolaryngology–Head & Neck Surgery, Louisiana State University Health Sciences Center, New Orleans
  • Mindy Black
    Department of Otolaryngology Head & Neck Surgery, University of Arizona College of Medicine, Tucson
  • Christianne Lane
    Division of Biostatistics, Department of Preventive Medicine, Keck School of Medicine, University of Southern California, Los Angeles
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication. ×
  • Correspondence to Robin Samlan: rsamlan@email.arizona.edu
  • Editor-in-Chief: Julie Barkmeier-Kraemer
    Editor-in-Chief: Julie Barkmeier-Kraemer×
  • Editor: M. Preeti Sivasankar
    Editor: M. Preeti Sivasankar×
Article Information
Speech, Voice & Prosodic Disorders / Voice Disorders / Special Populations / Older Adults & Aging / Speech, Voice & Prosody / Newly Published / Research Article
Research Article   |   June 21, 2018
Vocal Fold Vibration in Older Adults With and Without Age-Related Dysphonia
American Journal of Speech-Language Pathology, Newly Published. doi:10.1044/2018_AJSLP-17-0061
History: Received May 3, 2017 , Revised November 29, 2017 , Accepted March 25, 2018
 
American Journal of Speech-Language Pathology, Newly Published. doi:10.1044/2018_AJSLP-17-0061
History: Received May 3, 2017; Revised November 29, 2017; Accepted March 25, 2018

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 (η2) was computed to estimate group effect.

Results Small effect sizes (η2 = .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 (η2 = .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.

Acknowledgments
This work was supported by a University of Arizona Faculty Seed Grant to Robin Samlan. Meira Abidov and Dori Scholer assisted with participant recruitment and data collection.
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