Journal article
Evaluation of Auditory and Visual Feedback for Airflow Interruption
Journal of voice, Vol.27(2), pp.149-154
03/01/2013
DOI: 10.1016/j.jvoice.2012.10.002
PMCID: PMC3595395
PMID: 23280384
Abstract
Introduction. Clinical application of mechanical interruption methods for measuring aerodynamic parameters has been hindered by relatively high intrasubject variability. To improve the intrasubject reliability, we evaluated the effect of auditory and visual feedback on subject performance when measuring aerodynamic parameters with the airflow interrupter.
Methods. Eleven subjects performed four sets of 10 trials with the airflow interrupter: no feedback (control); auditory feedback (tone matching subject's F-0 played over headphones); visual feedback (real-time feedback of sound pressure level, frequency, and airflow); and combined auditory and visual feedback. Task order was varied across subjects. The effect of each feedback method on mean and coefficient of variation (CV) of subglottal pressure (P-s), mean flow rate (MFR), and laryngeal airway resistance (R-L; P-s/MFR) compared with that of the control trials was determined using paired t tests. Feedback methods were compared against each other using one-way repeated measures analysis of variance.
Results. Each feedback method significantly decreased CV of R-L compared with that of the control trials (auditory feedback: P 0.005; visual feedback: P 0.008; and combined feedback: P < 0.001). Auditory feedback (P = 0.011) and combined feedback (P = 0.026) also decreased CV of MFR. Mean MFR was significantly higher during trials with visual feedback compared with that of the auditory feedback.
Conclusions. Each feedback method improved the intrasubject consistency when measuring R-L. Feedback appeared to have a greater effect on MFR than P-s. Although there is no clear optimal feedback method, each is preferable to not providing any feedback during trials. Evaluating new methods of visual feedback to further improve MFR and thus R-L measurement would be valuable.
Details
- Title: Subtitle
- Evaluation of Auditory and Visual Feedback for Airflow Interruption
- Creators
- Matthew R. Hoffman - University of Wisconsin–MadisonAdam L. Rieves - University of Wisconsin–MadisonKetan Surender - University of Wisconsin–MadisonErin E. Devine - University of Wisconsin–MadisonJack J. Jiang - University of Wisconsin–Madison
- Resource Type
- Journal article
- Publication Details
- Journal of voice, Vol.27(2), pp.149-154
- DOI
- 10.1016/j.jvoice.2012.10.002
- PMID
- 23280384
- PMCID
- PMC3595395
- NLM abbreviation
- J Voice
- ISSN
- 0892-1997
- eISSN
- 1873-4588
- Publisher
- Elsevier
- Number of pages
- 6
- Grant note
- R01 DC008153; T32 DC009401 / National Institutes of Health from the National Institute on Deafness and other Communicative Disorders R01DC008153 / NATIONAL INSTITUTE ON DEAFNESS AND OTHER COMMUNICATION DISORDERS; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute on Deafness & Other Communication Disorders (NIDCD)
- Language
- English
- Date published
- 03/01/2013
- Academic Unit
- Otolaryngology
- Record Identifier
- 9984366286002771
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