Research Laboratory

The Applied Hearing Research Laboratory is located on the Mountain Home VAMC campus.  The Applied Hearing Research Laboratory receives support from the Rehabilitation Research and Development (RR&D) Service, Department of Veterans Affairs via the Auditory and Vestibular Dysfunction Research Enhancement Award Program grant and a RR&D Merit Review grant.

People

Kim S. Schairer, Ph.D.

Research Projects and Current Funding

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Department of Veterans Affairs

Dr. Schairer has two lines of research. One goal is to use non-behavioral tests to study how sound is transmitted through the middle and inner ears, and how sound transmission is affected by disorders of these two parts of the auditory system. A benefit to Veterans is improvement in identification and differentiation of middle ear disorders, which in turn can be used by physicians to make decisions about diagnosis and treatment. The second goal is to use behavioral tests to study variability of sound processing and how it affects a listener's ability to focus on a listening task and to understand speech in noise. Behavioral hearing tests are combined with measures of tinnitus, dizziness, and anxiety to provide a more complete picture of "listening" and the difficulties that can be associated with age, head injuries, and other factors. A benefit to Veterans is improvement in identification of patients with hearing loss who have greater variability in sound processing and may need more follow-up to adjust to new amplification.

Student Projects

under construction.

Current Equipment/Technology

The Applied Hearing Science Laboratory is equipped with: 1.) Tucker Davis System 3 for psychoacoustic tests, 2.) Intelligent Hearing Systems otoacoustic emission and evoked potential system, 3.) a wideband immittance test system, and 4.) standard audiometric test equipment including a GSI Tympstar and GSI-61 audiometer.

lab

Other

under construction.

Publications/Presentations/Awards

Publications:

Schairer, K. S. (2012). Mild traumatic brain injury and associated effects on the auditory system. Perspectives (Division 6), 16(1), 18-25.

Schairer, K. S., Morrison, B., Steininger, E., and Fowler, C. (2011). Relationships among standard and wideband measures of middle ear function and distortion product otoacoustic emissions. J Am Acad Aud, 22(5), 253-264. [PMID: 21756841]

Helfer, T. M., Jordan, N. N., Lee, R. B., Pietrusiak, P., Cave, K., and Schairer, K. (2011). Noise Induced Hearing Injury and Comorbidities Among Postdeployment US Army Soldiers April 2003 Through June 2009. Am J Aud, 20, 33-41. [PMID: 21474555]

Keefe, D. H. and Schairer, K. S. (2011). Specification of absorbed sound power in the ear canal. J Acoust Soc Am, 129(2), 779-791. [PMID: 21361437; PMCID: PMC3070993]

Jesteadt, W., Schairer, K. S., Nizami, L., Khaddam, S., and Neely, S. T. (2009). Effects of external noise on detection of intensity increments. J Acoust Soc Am, 126(4), 1941-1953. [PMID: 19813806; PMCID: PMC2771056]

Keefe, D. H., Schairer, K. S., Ellison, J. C., Fitzpatrick, D. F., and Jesteadt, W. (2009). Use of stimulus-frequency otoacoustic emissions to investigate efferent and cochlear contributions to temporal overshoot. J Acoust Soc Am, 125(3), 1595-1604. [PMID: 19275317; PMCID: PMC2677284]

Schairer, K. S., Messersmith, J. and Jesteadt, W. (2008). Use of psychometric-function slopes for forward-masked tones to investigate cochlear nonlinearity. J Acoust Soc Am, 124(4), 2196-2215. [PMID: 19062859; PMCID: PMC2600619]

Presentations:

Lett, K., Nordberg, J., and Schairer, K (2012). Improvement of word discrimination in noise with a personal FM system in children with Down syndrome. Poster presented at the 2012 Annual Convention of the Wisconsin Speech-Language Pathology and Audiology Professional Association. February 23-25, Milwaukee, WI. [Won first place in research symposium poster competition.]

Schairer, K. S. (2011). Wideband acoustic transfer functions in children and adults. Invited talk at the 41st Annual Midsouth Conference on Communicative Disorders, February 24-25, Hilton Hotel, Memphis, TN.

Roths, T., Thorleifson, C., Rafferty, M., Fowler, C. G., and Schairer, K. S. (2010). Multi-frequency and wideband measurements of middle ear function in young children. Poster presented at the 2010 Annual Convention of the Wisconsin Speech-Language Pathology and Audiology Professional Association. February 25-27, Oshkosh Convention Center Oshkosh, WI.

Schairer, K. S. (2010). Cochlear Implants 101. Invited talk at the Wisconsin Educational Services Program for the Deaf and Hard of Hearing Professional Conference, March 11-12, Concourse Hotel & Governor's Club, Madison, WI.

Schairer, K. S. (2010). Hearing Research in the University of Wisconsin Doctor of Audiology Program. Invited talk at the 2010 Annual Convention of the Wisconsin Speech-Language Pathology and Audiology Professional Association. February 25-27, Oshkosh Convention Center Oshkosh, WI.

Schairer, K. S., Steininger, E., Morrison, B., and Fowler, C. (2009). "Relationship between wideband middle ear measures and otoacoustic emissions." Presented at the 2009 American Speech-Language-Hearing Association Convention, November 19-21, 2009, New Orleans, LA.

Schairer, K. S., Morrison, B., Steininger, E., and Fowler, C. (2009). "Comparison of measurements at ambient pressure on clinical immittance and wideband acoustic transfer function systems." Presented at the 157th Meeting of the Acoustical Society of America, May 18-22, 2009, Portland, OR

Schairer, K. S. (2009). "Hearing Loss 101." Invited presentation given to caregivers of children with hearing loss at the 7th Annual Statewide Family Conference. March 13-15, 2009, Madison, WI.

Schairer, K., Almer, M., Fowler, C., Stenberg, E., and Chipman, S. (2008). Standard clinical and wideband estimates of ipsilateral middle ear muscle reflex thresholds. Presented at the 31st Annual MidWinter Meeting of the Association for Research in Otolaryngology, Phoenix, AZ, February, 2008.

Awards:

Outstanding Alumnus Award                     The University of Memphis                                          2/2011

Award for Continuing Education (ACE)       American Speech-Language-Hearing Association          12/2008 – 12/2011

Award for Continuing Education (ACE)       American Speech-Language-Hearing Association           2/2007 – 2/2010