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National Center for Rehabilitative Auditory Research (NCRAR)


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Frederick (Erick) J. Gallun, Ph.D.

Phone: 503-220-8262 ext. 57472

Current Appointments

  • Research Investigator
  • Associate Professor, Dept. Otolaryngology/Head & Neck Surgery and Neuroscience Graduate Program, Oregon Health and Science University

Research Interests

  • Exploring the potential impacts of age, hearing loss, and brain injury on the ability of listeners to extract information from complex auditory stimuli.
  • Development of portable, automated, rapid tests of auditory function based on current models of the processing associated with the central auditory system.

Current Research Projects

“Predicting the benefits of spatial and spectrotemporal cues”
Principal Investigator: Frederick J. Gallun, PhD
National Institutes of Health, NIDCD, R01 2012-2017.

“Efficient diagnostic tools to evaluate central auditory dysfunction”
Principal Investigator: Frederick J. Gallun, PhD;
Co-Principal Investigators: David Eddins, PhD and Aaron Seitz, PhD
National Institutes of Health, NIDCD, Translational R01 2016-2021.

"Perception of dynamic acoustic signals by hearing impaired listeners"
Principal Investigator: Michelle Molis, PhD
Co-Investigators: Frederick Gallun, PhD and Marjorie Leek, PhD
National Institutes of Health, NIDCD, R01 2013-2018.

"Blast exposed Veterans with auditory complaints"
Principal Investigator: Sheila Pratt, PhD
Co-Principal Investigators: Lindsey Jorgensen, PhD; Frederick Gallun, PhD
VA RR&D Merit Award 2015-2019.

“Acoustic and Perceptual Effects of WDRC Amplification”
Principal Investigator: Pamela Souza, PhD
Co-Investigators: Frederick Gallun, PhD and Richard Wright, PhD
National Institutes of Health, NIDCD, R01 2016-2021.

“Using Electrophysiology to Complement Speech Understanding-in-Noise Measures”
Principal Investigator: Curtis Billings, PhD
Co-Investigator: Frederick Gallun, PhD
National Institutes of Health, NIDCD, R01 2016-2021.

“The Brain-Behavior Relationship: Age, Hearing, and their Effects on Understanding Speech in Noise”
Principal Investigator: Curtis Billings, PhD
Co-Investigator: Frederick Gallun, PhD
VA RR&D Merit Award 2016-2021.

“Faculty Scholarship, P.J. Šafárik University, Košice, Slovakia”

Frederick Gallun, PhD
Ministry of Education of the Slovak Republic, 2017

“Adaptation, learning and training for spatial hearing in complex environments”
Principal Investigator: Norbert Kopço, PhD
European Union Marie Curie Research and Innovation Staff Exchange, 2016-2018 

Selected Honors and Service

  • Elected Fellow of the Acoustical Society of America
  • Editor-in-Chief (Hearing), Journal of Speech, Language, and Hearing Research (2017-2021)

Selected Recent Publications

Gallun, F.J., Lewis, M.S., Papesh, M.A. (in press) “Auditory complaints among blast-exposed Veterans” Brain Injury.

Papesh, M.A., Folmer, R.L., Gallun, F.J., (in press) “Cortical measures of binaural processing predict spatial release from masking performance” Frontiers in Neuroscience

Hoover, E., Souza, P.E., Gallun, F.J. (in press) “Auditory and cognitive factors associated with speech-in noise complaints following mild traumatic brain injury” Journal of the American Academy of Audiology.

Srinivasan, N.K., Stansell, M.M., Gallun, F.J. (2017) “The role of early and late reflections on spatial release from masking: Effects of age and hearing loss” Journal of the Acoustical Society of America, 141 EL185
Ellinger, R.L., Jakien, K.M., Gallun, F.J. (2017) “The role of interaural differences in speech intelligibility in complex multitalker environments” Journal of the Acoustical Society of America, 141 EL170

Jakien, K. M., S. D. Kampel, S. Y. Gordon and Gallun, F.J. ((2017). "The benefits of increased sensation level and bandwidth for spatial release from masking." Ear and Hearing 38(1), e13-e21

Gallun, F.J.,
Lewis, M.S., Folmer, R.L., Hutter, M., Papesh, M.A., Belding, H., Leek, M.R. (2016) “Chronic effects of exposure to high-intensity blasts: Results on tests of Central Auditory Processing” Journal of Rehabilitation Research and Development, 53(6): 705-720.

Srinivasan, N.K., Jakien, K.M, Gallun, F.J. (2016) “Release from masking for small separations: Effects of age and hearing loss” Journal of the Acoustical Society of America: Express Letters. 140, EL73.

Reinhart, P.N., Souza, P.E., Srinivasan, N.K., Gallun, F.J. (2016) “Effects of reverberation and compression on consonant identification in individuals with hearing impairment” Ear and Hearing. 37(2):144-152.

Best, V., Mason, C.R., Swaminathan, J., Kidd, Jr., G., Jakien, K., Kampel, S., Gallun, F.J., Buchholz, J., Glyde, H. (2016) “On the contribution of target audibility to performance in spatialized speech mixtures” In Physiology, Psychoacoustics and Cognition in Normal and Impaired Hearing, edited by P. van Dijk, D. Baskent, E. Gaudrain, E. de Kleine, A. Wagner, and D. Lanting. Springer International Publishing. 83-91.

Souza, P., Wright, R., Blackburn, M., Tatman, R., Gallun, F. (2015). "Individual sensitivity to spectral and temporal cues in listeners with hearing impairment." Journal of Speech Language and Hearing Research. 58(2):520-34.

Molis, M. R., Kampel, S. D., McMillan, G. P., Gallun, F. J., Dann, S. M., Konrad-Martin, D. (2015). "Effects of hearing and aging on sentence-level time-gated word recognition". Journal of Speech Language and Hearing Research. 58(2):481-96.

Ellingson, R. M., Gallun, F. J., Bock, G. (2015). "Measurement with verification of stationary signals and noise in extremely quiet environments – measuring below the noise floor." Journal of the Acoustical Society of America. 137(3):1164-1179.

Gallun, F.J., McMillan, G.P., Molis, M.R., Kampel, S.D., Dann, S.M., Konrad-Martin, D. (2014) “Relating age and hearing loss to monaural, bilateral, and binaural temporal sensitivity” Frontiers in Neuroscience. 8:172.

Gallun, F.J., Diedesch, A.C., Kampel, S.D., Jakien, K.M. (2013). “Independent impacts of age and hearing loss on spatial release in a complex auditory environment” Frontiers in Neuroscience. 7:252. doi:

Gallun, F.J., Diedesch, A.C., Kubli, L., Walden, T., Folmer, R.L., Lewis, M.S., McDermott, D.J., Fausti, S., Leek, M.R. (2012). “Performance on tests of central auditory processing by individuals exposed to high-intensity blasts” Journal of Rehabilitation Research and Development. 49(7), 1005-1024.

Selected Recent Presentations

Gallun, F.J. & Molis, M.R. (2016). “Spectral ripple discrimination by listeners with older ears: Modeling and psychophysics”. International Hearing Aid Conference, Lake Tahoe, CA.

Gallun, F. J.
(2015). Assessing auditory processing abilities in blast-exposed Veterans. AudiologyOnline.

Gallun, F.J., McMillan, G.P., Kampel, S.D., Jakien, K.M., Srinivasan, N.K., Stansell, M.M., Gordon, S.Y. (2015) “Verification of an automated headphone-based test of spatial release from masking.” 170th Meeting of the Acoustical Society of America, Jacksonville, FL.

Gallun, F. J. (2015). “Validating auditory complaints of blast-exposed Veterans” VA State of the Art Workshop on Traumatic Brain Injury 2015, Washington, DC

Gallun, F.J. (2015) “Learning from nature’s experiments: What clinical research can mean for sensory scientists”, 2nd Annual Workshop on Cognitive Neuroscience of Auditory and Cross-modal Perception, P.J. Šafárik University, Košice, Slovakia

Gallun, F.J. (2014) “Central Auditory Processing following blast exposure in a Veteran population: Behavioral and electrophysiological evidence”, 32nd Annual Symposium of the National Neurotrauma Society, San Francisco, CA

Gallun, F.J. (2014) “Evidence for impacts of blast exposure on central auditory function” University College London Ear Institute, London, UK

For additional information on research, presentations and publications, please contact Dr. Gallun