NCRAR Staff Investigator
Assistant Professor, Dept. Otolaryngology, Oregon Health and Sciences University
My program of research is aimed at separating out the various physiological contributions to impaired speech comprehension by the elderly. Two projects are currently underway. The first project tests the extent to which distortions of the speech input signal due to abnormal frequency tuning, combined with slowed perceptual encoding contributes to abnormal speech comprehension by older people with hearing loss. The second project tests the hypothesis that age-related changes in auditory nerve temporal responses contribute to the abnormal processing of temporal speech features by older adults. A collaborative project with Dr. Stephen Fausti evaluates the extent to which otoacoustic emissions can be used as an early indicator of hearing loss following administration of ototoxic drugs. A collaborative project with Dr. Nancy Vaughan examines ways in which diabetes melitus affects hearing and speech understanding ability.
Frequency Tuning and Word Recognition Speed in Older Adults, Dawn Konrad-Martin, Ph.D. Rehabilitation Research & Development Service, 7/1/06-6/30/09.
Temporal Resolution of Cochlear and Auditory Nerve Responses in Older Adults, Dawn Konrad-Martin, Ph.D. National Institutes on Deafness and Other Communication Disorders (NIDCD), 4/1/06-3/31/09.
Investigation of Individualized Otoacoustic Emission Techniques for Early Detection of Ototoxicity, Stephen A. Fausti, Ph.D. Rehabilitation Research and Development Service,
10/15/03-12/30/06.
Effects of diabetes on processing of verbal communication, Nancy E. Vaughan, Ph.D. Rehabilitation Research and Development Service, 4/1/04-3/31/08.
(Links to abstracts)
Konrad-Martin D, & Keefe DH. Time-frequency analyses of transient-evoked stimulus-frequency and distortion-product otoacoustic emissions. Testing cochlear model predictions: Journal of the Acoustical Society of America 2003;114: 2021-2048.
Fausti SA, Wilmington DJ, Helt PV, Helt WJ, & Konrad-Martin D. Hearing health and care-The need for improved hearing loss prevention and hearing conservation practices. Journal of Rehabilitation Research and Development 2005, 42(4): 45-62.
Gordon JS, Phillips DS, Helt WJ, Konrad-Martin D, & Fausti SA. The evaluation of the use of insert earphones for bedside ototoxicity monitoring. Journal of Rehabilitation Research and Development 2005; 42(3): 353-361.
Konrad-Martin D, & Keefe, DH. Transient-evoked stimulus-frequency and distortion-product otoacoustic emissions in normal and impaired ears. Journal of the Acoustical Society of America 2005a; 117: 3799-3815.
Konrad-Martin D, Wilmington DJ, Gordon JS, Reavis KM, & Fausti SA. Audiological management of patients receiving aminoglycoside antibiotics. Volta Review, 2005, 105: 229-250.
Fausti SA, Helt WJ, Gordon JS, Reavis KM, Phillips DS, & Konrad-Martin D. Audiologic monitoring for ototoxicity and patient management, in Pharmacology and Ototoxicity for Audiologists (KC Campbell, ed.) 2006, accepted for publication.
Konrad-Martin D, Reavis KM, Gordon JS, Helt WJ, Fausti SA. Relationship between ototoxic induced behavioral threshold changes and DPOAE changes. Podium presentation at the American Speech-Language and Hearing Association, November, 2007.
Gordon J, Konrad-Martin D, Reavis K, Wilmington D, Bratt GW, & Fausti SA. Comparing audiometric threshold shift definitions for ototoxicity detection. Podium presentation at the American Speech-Language and Hearing Association, November, 2007.
Konrad-Martin D. Schairer KS (2005). Update on the use of stimulus-frequency otoacoustic emissions to investigate cochlear function. ASHA Division 6 sponsored Instructional Course presented at the Annual Convention of the American Speech-Language and Hearing Association, San Diego, CA.
Handlesman J, Konrad-Martin D. (2005). Monitoring ototoxic changes in the auditory and vestibular systems. ASHA Division 6 sponsored Short Course presented at the American Speech-Language and Hearing Association, San Diego, CA.
Konrad-Martin D, Fausti SA (2005). Basic principles of ototoxicity monitoring. Presented September 21 at the NCRAR Bi-annual Pre-conference workshop at the Portland VA Medical Center, Portland, OR.
Konrad-Martin D (2005). Ototoxicity monitoring using objective measures of auditory function. Presented September 21 at the NCRAR Bi-annual Pre-conference workshop at the Portland VA Medical Center, Portland, OR.
Konrad-Martin D (2006). Effects of stimulus level and hearing status on OAE latencies. Invited lecture presented January 23rd at University of Colorado at Boulder, Department of Speech, Language & Hearing Sciences, Boulder, CO.
Konrad-Martin D, Phillips DS, Reavis KM, Gordon JS, Helt WJ, Bratt GW, and Fausti SA (2007). Evaluation of Audiometric Threshold Shift Definitions for Ototoxicity Monitoring. Poster presented at March Meeting of the American Auditory Society in Scottsdale, Arizona.
Jacobs PG, Wan EA, Konrad-Martin D, Fausti SA (2007). Correlating Forward Masked SFOAE with Blood Glucose in Diabetic Subjects. Poster presented at March Meeting of the American Auditory Society in Scottsdale, Arizona.
Dawn Konrad-Martin, Ph.D., joined the NCRAR as a Staff Investigator in 2003. She is a certified Audiologist (ASHA-CCC-A). Dr. Konrad-Martin received a Ph.D. in Audiology from the University of Washington in Seattle under the direction of Dr. Susan Norton and completed a Post-Doctoral Fellowship at Boys Town National Research Hospital in Omaha under the direction of Dr. Michael Gorga. Prior to joining the NCRAR, she was an Assistant Professor in the Department of Communication Disorders and Sciences at Rush University in Chicago.
