Evidence for Auditory-Motor Impairment in Individuals with Hyperfunctional Voice Disorders
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| Title: | Evidence for Auditory-Motor Impairment in Individuals with Hyperfunctional Voice Disorders |
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| Language: | English |
| Authors: | Stepp, Cara E., Lester-Smith, Rosemary A., Abur, Defne, Daliri, Ayoub, Noordzij, J. Pieter, Lupiani, Ashling A. |
| Source: | Journal of Speech, Language, and Hearing Research. Jun 2017 60(6):1545-1550. |
| Availability: | American Speech-Language-Hearing Association. 2200 Research Blvd #250, Rockville, MD 20850. Tel: 301-296-5700; Fax: 301-296-8580; e-mail: slhr@asha.org; Web site: http://jslhr.pubs.asha.org |
| Peer Reviewed: | Y |
| Page Count: | 6 |
| Publication Date: | 2017 |
| Sponsoring Agency: | National Institute on Deafness and Other Communication Disorders (NIDCD) |
| Contract Number: | DC015570 DC004663 |
| Document Type: | Journal Articles Reports - Research |
| Descriptors: | Evidence, Voice Disorders, Motor Development, Auditory Tests, Vowels, Incidence, Control Groups, Experimental Groups, Anxiety, Perceptual Motor Learning |
| DOI: | 10.1044/2017_JSLHR-S-16-0282 |
| ISSN: | 1092-4388 |
| Abstract: | Purpose: The vocal auditory-motor control of individuals with hyperfunctional voice disorders was examined using a sensorimotor adaptation paradigm. Method: Nine individuals with hyperfunctional voice disorders and 9 individuals with typical voices produced sustained vowels over 160 trials in 2 separate conditions: (a) while experiencing gradual upward perturbations in the fundamental frequency ("f[subscript o]") of their auditory feedback (shift-up) and (b) under no auditory perturbation (control). The shift-up condition consisted of 4 ordered (fixed) phases: baseline (no perturbation), ramp (gradual increases in heard "f[subscript o]"), hold (a consistently higher heard "f[subscript o]"), and after-effect (no perturbation). Adaptive responses were defined as the difference in produced "f[subscript o]" during control and shift-up conditions. Results: Adaptive responses were significantly different between groups. Individuals with typical voices generally showed compensatory adaptive responses, with decreased "f[subscript o]" during the ramp and hold phases. Conversely, many individuals with hyperfunctional voice disorders instead displayed the opposite effect by following the direction of the perturbation. When "f[subscript o]" was experimentally increased, speakers further increased their "f[subscript o]". Conclusion: Results indicate that some individuals diagnosed with hyperfunctional voice disorders have disrupted auditory-motor control, suggesting atypical neurological function. These findings may eventually allow for the development of new interventions for hyperfunctional voice disorders. |
| Abstractor: | As Provided |
| Entry Date: | 2017 |
| Accession Number: | EJ1147905 |
| Database: | ERIC |
| Abstract: | Purpose: The vocal auditory-motor control of individuals with hyperfunctional voice disorders was examined using a sensorimotor adaptation paradigm. Method: Nine individuals with hyperfunctional voice disorders and 9 individuals with typical voices produced sustained vowels over 160 trials in 2 separate conditions: (a) while experiencing gradual upward perturbations in the fundamental frequency ("f[subscript o]") of their auditory feedback (shift-up) and (b) under no auditory perturbation (control). The shift-up condition consisted of 4 ordered (fixed) phases: baseline (no perturbation), ramp (gradual increases in heard "f[subscript o]"), hold (a consistently higher heard "f[subscript o]"), and after-effect (no perturbation). Adaptive responses were defined as the difference in produced "f[subscript o]" during control and shift-up conditions. Results: Adaptive responses were significantly different between groups. Individuals with typical voices generally showed compensatory adaptive responses, with decreased "f[subscript o]" during the ramp and hold phases. Conversely, many individuals with hyperfunctional voice disorders instead displayed the opposite effect by following the direction of the perturbation. When "f[subscript o]" was experimentally increased, speakers further increased their "f[subscript o]". Conclusion: Results indicate that some individuals diagnosed with hyperfunctional voice disorders have disrupted auditory-motor control, suggesting atypical neurological function. These findings may eventually allow for the development of new interventions for hyperfunctional voice disorders. |
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| ISSN: | 1092-4388 |
| DOI: | 10.1044/2017_JSLHR-S-16-0282 |
