Faculty

Tiffany A. Johnson

Assistant Professor

Phone: (785) 864-4467 (office)
Phone: (785) 864-3834 (lab)
Fax: (785) 864-3974
tiffany-johnson@ku.edu

B.A., 1992, Creighton University
M.A., 1995, University of Iowa
Ph.D., 2003, University of Iowa
NIH Post-Doctoral Fellow, 2003-2006, Boys Town National Research Hospital

Director, Human Auditory Research Laboratory

Research Interests

Dr. Johnson's research focuses on understanding how the human auditory system works in ears with both normal hearing and hearing loss. Research in the lab includes basic investigations of human auditory system function using non-invasive techniques (otoacoustic emissions, auditory evoked potentials, behavioral approaches). Translational studies aimed at improving the identification and diagnosis of hearing loss in infants and young children are also underway.

Selected Publications

Johnson, T.A., Neely, S.T., Kopun, J.G., Dierking, D.M., Tan, H., Converse, C., Kennedy, E., Gorga, M.P. (under review). Distortion product otoacoustic emissions: Cochlear-source contributions and clinical test performance. Journal of the Acoustical Society of America.

Johnson, T.A., Gorga, M.P., Neely, S.T., Oxenham, A.J., & Shera, C.A. (2007). Relations between otoacoustic and psychophysical measures of cochlear function. In Manley, G.A., Fay, R.R. and Popper, A.N. (Eds.), Active Processes and Otoacoustic Emissions in Hearing. Springer Science+Business Media, LLC, New York, in press.

Gorga, M.P., Neely, S.T., Johnson, T.A., Dierking, D., & Garner, C. (2007). The relation between distortion product otoacoustic emissions and hearing loss. In M.S. Robinette & T.J. Glattke (Eds.), Otoacoustic Emissions: Clinical Applications (3rd Edition). Thieme Medical Publishers, Inc., New York, 197-225.

Johnson, T.A., Neely, S.T., Kopun, J.G., and Gorga, M.P. (2006). Reducing reflected contributions to ear-canal distortion product otoacoustic emissions in humans. Journal of the Acoustical Society of America, 119, 3896-3907.

Gorga, M.P., Johnson, T.A., Kaminski, J.K., Beauchaine, K.L., Garner, C.A., & Neely, S.T. (2006). Using a combination of click- and toneburst-evoked auditory brainstem response measurements to estimate pure-tone thresholds. Ear and Hearing, 27, 60-74.

Johnson, T.A., Neely, S.T., Garner, C.A., & Gorga, M.P. (2006). Influence of primary-level and primary-frequency ratios on human distortion product otoacoustic emissions. Journal of the Acoustical Society of America, 119, 418-428.

Gorga, M.P., Dierking, D.M., Johnson, T.A., Beauchaine, K.L., Garner, C.A., & Neely, S.T. (2005). A validation and potential clinical application of multivariate analyses of DPOAE data. Ear and Hearing, 26, 593-607.

Johnson, T.A. & Brown, C.J. (2005). Threshold prediction using the auditory steady-state response and the toneburst auditory brainstem response: A within-subject comparison. Ear and Hearing, 26, 559-576.