United States Department of Veterans Affairs

Marjorie Leek, Ph.D.

E-Mail:  marjorie.leek@va.gov
Telephone:  503-220-8262 x54692
Fax:  503-721-1402

Current Appointments

Senior Research Career Scientist, NCRAR
Deputy Director for Research, NCRAR
Professor, Department of Otolaryngology Head & Neck Surgery, Oregon Health & Science University

Research Interests

focus on auditory perception of complex sounds and speech by normal-hearing and hearing-impaired individuals; speech recognition in noise; modeling of the auditory system; auditory attentional mechanisms; comparative auditory processes across species

Dr. Leek received her Ph.D. in 1980 in hearing science from the University of Kansas. Following graduation, she completed a Clinical Fellowship Year in Audiology, and subsequently, a postdoctoral research fellowship at Boys Town National Research Hospital (1980-1982). Before joining the NCRAR, she held academic appointments at Arizona State University (1982-1986) and the University of Minnesota (1986-1988), and served as Senior Researcher at the Army Audiology & Speech Center, Walter Reed Army Medical Center (1989-2005). She has received continuous extramural funding of her laboratory through the National Institutes of Health (NIH RO1, "Hearing Loss and the Perception of Complex Sounds," 1989-2014), and holds two VA Merit Review grants.

Current Research

  • Central Auditory Processing Disorders Associated with Blast Exposure, VA RR&D, 10/1/07-9/30/11
  • Clinical Applications for Time-Compressed Speech Tests, VA RR&D, 10/1/06-9/30/11
  • Hearing Loss and the Perception of Complex Sounds, NIH-NIDCD, 7/1/09-6/30/14
  • Multi-site Study of the Efficacy of Speech Perception Training for Hearing-Aid Users, NIH-NIDCD , 8/1/10-7/31/15
  • Pre-doctoral Summer Training Program in Auditory Research, NIH-NIDCD, 5/1/07-4/30/12


Lauer AM, Dooling RJ, Leek MR: Psychophysical evidence of damaged active processing mechanisms in Belgian waterslager canaries. Journal of Comparative Physiology 195:193-202, 2009.

Lauer AM, Molis MR, Leek MR: Discrimination of time-reversed harmonic complexes by normal-hearing and hearing-impaired listeners, J. Assoc. Res. Otol. 10, 609-619.

Leek MR, Molis MR: Beyond audibility: Hearing loss and the perception of speech. ASHA Leader, 14:14-17, 2009.

Folmer R, Saunders G, Dann S, Griest S, Leek M, Fausti S: Development of a computer-based, multi-media hearing loss prevention education program for Veterans and Military Personnel. Perspectives in Audiology, 6:9-19, 2010

Billings CJ, O'Connell Bennet K, Molis MR, Leek MR. Cortical encoding of signals in noise: Effects of stimulus type and recording paradigm. Ear &Hearing, 32:53-60, 2011, NIHMS: 229242.

Molis MR, Leek MR. Identification of ambiguous vowel stimuli by hearing-impaired listeners. J. Speech-Hearing Res. (in press)