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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, Oregon Health and Science University

Research Interests

Exploring the potential impacts of age, hearing loss, and other listener-specific variables on the ability of the central auditory system to extract information from complex auditory stimuli.

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.

“Central Auditory Processing deficits associated with blast exposure”
Principal Investigator: Frederick J. Gallun, PhD
Co-Principal Investigator: Marjorie R. Leek, PhD
VA RR&D Merit Award 2011-2015.

“Determinants of word recognition speed in older listeners”
Principal Investigator: Dawn Konrad-Martin, PhD
Co-Principal Investigator: Frederick J. Gallun, PhD
VA RR&D Merit Award 2010-2014.

“Acoustic and perceptual effects of WDRC amplification”
Principal Investigator: Pamela Souza, PhD, CCC-A
Co-Investigators: Frederick Gallun, PhD and Richard Wright, PhD
National Institutes of Health, NIDCD, R01 2010-2014.
"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.

Recently Completed Research Projects

“Effects of aging and hearing loss during rapid sound processing”
Principal Investigator: Marilyn Dille, PhD
Co-Investigator: Frederick J. Gallun, PhD
VA RR&D Pilot Award 2011-2012.

"The ability to make multiple auditory judgments about non-speech stimuli"
Principal Investigator: Frederick J. Gallun, PhD
National Institutes of Health, NIDCD, R03 2007-2011.

“Modeling auditory integration in people with impaired hearing”
Principal Investigator: Frederick J. Gallun, PhD
VA RR&D Career Development II Award 2007-2011.

“Speech intelligibility and cognition:  Are inpatients impaired by noise?”
Principal Investigator: Diana Pope, PhD, MS, RN
Co-Investigator: Frederick J. Gallun, PhD
VA HSR&D Nursing Research Initiative 2008-2010.
Principal Investigator: Frederick J. Gallun, Ph.D.

Selected Recent Publications

Pope, D.S., Gallun, F.J., Kampel, S. (2013) “Effect of hospital noise on patients’ ability to hear, understand and recall speech” Research in Nursing & Health. 

McMillan, G.P., Hanson, T.E., Gallun, F.J., Saunders, G. (2013) “A joint circular regression model for repeated measures auditory localization performance data” Journal of the Royal Statistical Society.

Molis, M.R, Diedesch, A.C., Gallun, F.J., Leek, M.R. (2013). “Vowel identification by amplitude and phase contrast” Journal of the Association for Research in Otolaryngology.14(1), 125-137.

Hoover, E., Souza, P.E., Gallun, F.J. (2012). “The consonant-weighted Envelope Difference Index (cEDI): a proposed technique for quantifying envelope distortion” Journal of Speech, Language, and Hearing Research. 55(6): 1802-6.

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.

Gallun, F.J., Lewis, M.S., Folmer, R.L., Diedesch, A.C., Kubli, L.R., McDermott, D.J., Walden, T.C., Fausti, S.A., Lew, H.L., Leek, M.R. (2012). “Implications of blast exposure for central auditory function” Journal of Rehabilitation Research and Development. 49(7), 1059-1074.

Billings, C., Papesh, M., Penman, T., Baltzell, L., Gallun, F.J. (2012) “Clinical use of aided cortical auditory evoked potentials as a measure of physiological detection or physiological discrimination” International Journal of Otolaryngology,Volume 12, Article ID 365752.

Gallun, F.J., Diedesch, A.C., Beasley, R. (2012). “Impacts of age on memory for auditory intensity” Journal of the Acoustical Society of America.132(2): 944-956.

Souza, P.E., Hoover, E., Gallun, F.J. (2012). “Application of the Envelope Difference Index to spectrally-sparse speech” Journal of Speech, Language, and Hearing Research.  55(3): 824-837.

Stecker, G.C., Gallun, F.J. (2012) “Binaural hearing, sound localization, and spatial hearing” in Translational Perspectives in Auditory Neuroscience: Normal Aspects of Hearing, edited by K. Tremblay and R. Burkhardt.  Plural Publishing, Inc., San Diego.

Folmer, R.L., Billings, C.J., Diedesch-Rouse, A.C., Gallun, F.J., Lew, H.L. (2011) “Electrophysiological assessments of cognition and sensory processing in TBI: Applications for diagnosis, prognosis and rehabilitation” International Journal of Psychophysiology, 82(1), 4-15.

Gallun, F.J, Saunders, G.H. (2010) “The ear-brain system: Approaches to the study and treatment of hearing loss” Journal of the American Academy of Audiology, 21(9): 564-66.

Gallun, F.J. (2010) “Judgments of intensity for brief sequences” Journal of the Acoustical Society of America. 127: EL166-171.

Selected Recent Presentations

Gallun, F.J., Kampel, S.D., Blankenship, S., Leek, M.R. (2013) “High frequency audibility and spatial release from informational masking” Assoc. Res. Otolaryngol. Abs.: 848.

Leek, M.R., Gallun, F.J., Molis, M.R, Belding, H.M. (2013) “Concurrent speech segregation based on the pitch strength of iterated rippled noise” Assoc. Res. Otolaryngol. Abs.: 604.

Gallun, F.J., Konrad-Martin, D.L., Molis, M.R., Dann, S., Kample, S.D., Vachhani, J.J. (2012) “Relationships among aging and temporal sensitivity at multiple time scales” Assoc. Res. Otolaryngol. Abs.: 635.

Gallun, F.J., Diedesch, A.C. (2011) “Distinguishing the effects of central and peripheral auditory dysfunction” Proceedings of the 17th Meeting of CSAIL.

Gallun, F.J., Diedesch, A.C. (2011) “Predicting performance in a multitalker environment” Heuser Hearing Institute Symposium 2011 – Spatial Hearing and Hearing Loss, Louisville, KY.

Gallun, F.J., Diedesch, A. (2011) “Predicting spatial benefit in older listeners” Assoc. Res. Otolaryngol. Abs.: 1034.

Gallun, F.J. and Diedesch, A.C. (2010) “Evaluating central auditory processing after blast exposure” 2010 Spring Conference of the Oregon Academy of Audiology, Lake Oswego, OR

Gallun, F.J., Souza, P.E., Hoover, E. (2010) “Evaluating hearing aid processing with an auditory model of modulation sensitivity.” J. Acoust. Soc. Am., 127: 1848.

Gallun, F.J., Diedesch, A., Beasley, R., Tsukuda, P. (2010) “Influences of aging on memory for intensity” Assoc. Res. Otolaryngol. Abs.: 883.

For additional information on research, presentations and publications see: Complete CV