Faculty
Abbas, Paul, Professor
Akeson, Marcia Clinical Supervisor
Alipour, Fariborz Adjunct Professor
Bentler, Ruth Professor and Department Chair
Brown, Carolyn J. Professor
Bryant, Karen Clinical Assistant Professor
Cilek, Toni Clinical Associate Professor
Delsandro, Elizabeth Clinical Assistant Professor
Duff, Melissa Assistant Professor
Fennell, Ann Clinical Associate Professor
Finnegan, Eileen Associate Professor
Fleckenstein, Stephanie Clinical Assistant Professor
Gfeller, Kate Professor
Goodman, Shawn Assistant Professor
Gordon, Jean K. Associate Professor
Holte, Lenore Clinical Professor
Hurtig, Richard Professor
Karnell, Michael Associate Professor
Kelsay, Danielle Clinical Associate Professor
Kirk, Karen Professor
Klemuk, Sarah Adjunct Assistant Professor
Louko, Linda Clinic Director
McGregor, Karla Professor
Moon, Jerald Professor
Niebuhr, Diane Clinical Associate Professor
Owen Van Horne, Amanda Assistant Professor
Scheer-Cohen, Alison Visiting Instructor
Titze, Ingo Professor
Tomblin, J. Bruce Professor
Turner, Christopher Professor
Tyler, Richard Professor
Wallace, Anne Clinical Associate Professor
Wu, Yu-Hsiang Adjunct Assistant Professor
Zebrowski, Patricia Professor

Professional / Scientific / Secretarial Staff
Albright, Dorothy Secretary
Arenas, Rick Research Assistant
Berns, Amanda Research Assistant
Eden, Nichole Research Assistant
Eldridge, Lauren Project Assistant
Ferguson, Connie Speech-Language Pathologist
Fick, Wendy Research Assistant
Lehrman, Kelvin Network Administrator
Miller, Kathy Clerk
Nichols, John Research Assistant
O'Brien, Marlea Program Associate
O'Keefe, Joanne Secretary
Ostrem, Julie Program Associate
Prusick, Lindsay Research Assistant
Rebal, Kathy Administrative Specialist
St. Clair Marcia Field Examiner
Stangl, Elizabeth Research Assistant
Walker, Elizabeth Audiologist
Wood, David Electronics Technician
Yotty, Mary Jo Secretary

copyright, The University of Iowa (2011).
All rights reserved.

Email: julie-ostrem@uiowa.edu
334-D Speech & Hearing Center
319 / 335-6602

Julie Ostrem's professional interests focus on the development of educational and service outreaches. Much of her work has been in the area of voice, although she wove the website for the Child Language Research Center and currently serves as the Department webmaster. She previously led a team in the creation of the Voice Academy, an NIDCD-funded website built for the vocal health of schoolteachers. She is currently working with Dr. Richard Hurtig on his Department of Education- funded project to assess the effectiveness of a reading comprehension intervention in the Chicago Public Schools.

 

Email: paul-abbas@uiowa.edu
Office #: Room 127B SHC
319 / 335-8733

Joint appointment
Department of Otolaryngology-Head & Neck Surgery

Research interests
Paul Abbas's research interest focuses on auditory physiology with emphasis on electrical stimulation of the ear. Studies include the application of electrophysiological measures in cochlear implant users as well as basic research and modeling of the response properties of the auditory nervous system to electrical stimulation.

Auditory Physiology Laboratory

Related Web Sites
Neural Prosthesis Program Contract Progress Reports
NIH Neural Prosthesis Program

Selected publications
Abbas,, PJ & Brown, CJ (2009).  Electrocochleography. In: Handbook of Clinical Audiology, 5th Ed. Katz & Burkard, Eds.  Williams & Wilkins.

Abbas, PJ, Brown, CJ, & Etler, CP (2006).  Electrophysiology and Device Telemetry  In:  Cochlear Implants, 2nd Ed.  S. Waltzman & N Cohen, Eds. New York: Thieme Publ.

Hu, N, Miller, CA, Abbas, PJ, Robinson, BK, Woo, J (2010).  Changes in auditory nerve responses across the duration of sinusioidally amplitude-modulated electric pulse-train stimuli.  J Assoc Res Otolaryngol 11, 641-56. 

Kim, JR, Abbas, PJ, Brown, CJ, Etler, CP, O'Brien, S, Kim, LS (2010). The Relationship between Electrically Evoked Compound Action Potential and Speech Perception : A Study in Cochlear Implant Users with Short Electrode Array. Otol Neurotol. 31, 1041-8.

He, S, Brown, CJ, Abbas, PJ (2010).  Effects of Stimulation Level and Electrode Pairing on The Binaural Interaction Component of The Electrically Evoked Auditory Brain Stem Response. Ear and Hearing 31, 457-70..

iller, CA, Abbas, PJ, Robinson, BK, Nourski, KV, Zhang, F, Jeng, FC (2009).  Auditory Nerve Fiber Responses to Combined Acoustic and Electric Stimulation.  J Assoc Res Otol.  10, 425-45.

Email: alipour@iowa.uiowa.edu
334-E Speech & Hearing Center
319 / 335-8694

Fariborz Alipour received his formal training in mechanical engineering and has been working for more than 20 years investigating the human voice. His specific research interests include speech biomechanics, finite element modeling of vocal fold vibration, aerodynamics and acoustics of voice, and computer simulation of phonation.

Selected Publications
Alipour F and Scherer RC (2011). “Ventricular Pressures in Phonating Excised Larynges” J. Acoust. Soc. Am , in review.

Alipour F and Finnegan EM(2011). “Acoustic Effects of False Vocal Folds and Laryngeal Ventricles ” Journal of Speech, Language, and Hearing Research , in press.

Alipour F, Scherer RC, and Finnegan EM (2011). “Measures of Spectral Slopes Using Excised Larynx Model,” Journal of Voice , in press.

Tokuda I, and Zorner S. (2011). “Mathematical Models and Numerical Schemes for the Simulation of Human Phonation,” Current Bioinformatics , 6(3): 323-343.

Kunkel SD, Suneja M, Ebert SM, Bongers K, Fox DK, Malmberg SE, Alipour F, Shields RK, and Adams CM. (2011). “mRNA Expression Signatures of Human Skeletal Muscle Atrophy Identify a Natural Compound that Increases Muscle Mass,” Cell Metabolism, 13: 627–638.

Alipour F, Jaiswal S, and Vigmostad S (2011). “Vocal Fold Elasticity of Pig, sheep, and cow larynges” Journal of Voice, 25(2), 131-136.

Titze IR, FitchWT, Hunter EJ, Alipour F, Montequin D, Armstrong DL, McGee J & Walsh EJ. (2010) “Vocal power and pressure-flow relationship in excised tiger larynges,” Journal of Experimental Biology , 213, 3866-3873.

Alipour F, Finnegan EM, Scherer RC. (2009). “Aerodynamic and acoustic effects of abrupt frequency changes in excised larynges,” Journal of Speech, Language, and Hearing Research . 52, 465-481

Alipour F and Jaiswal S. (2009). “Glottal Airflow resistance in Excised Pig, sheep and cow larynges” Journal of Voice , 23(1), 40-50.

Finnegan EM and Alipour F. (2009). “Phonatory effects of supraglottic structures in excised canine larynges,” Journal of Voice , 23(1), 51-61

 

Email: marcia-akeson@uiowa.edu
127-B Speech & Hearing Center
319 / 335-8725

Professional Interests
Neurogenic speech/language disorders

Email: sandie-bass-ringdahl@uiowa.edu
125-C Speech & Hearing Center
319 / 335-8728

Research interests
Early speech development of infants and toddlers who are deaf or hard of hearing, newborn hearing screening, aural (re)habilitation, and cochlear implants.

Member of the Delta Center

Publications

Journal Articles
Moore, J.A. & Bass-Ringdahl, S. (2002). Role of infant vocal development in candidacy for and efficacy of cochlear implantation. Annals of Otology, Rhinology & Laryngology, 111(5), 52-55.

Margolis, RH., Bass-Ringdahl, S., Hanks, W.D., Holte, L., and Zapala, D.A. (2003). Tympanometry in newborn infants – 1kHz Norms. Journal of the American Academy of Audiology, 14(7), 386-395.

Barker, B.A. & Bass-Ringdahl, S.M. (2004). The effect of audibility on audio-visual speech perception in infant cochlear implant recipients. International Congress Series, 1273, Cochlear Implants, Proceedings ofthe VIII International Cochlear Implant Conference, 316-319.

Spencer, L.J. & Bass-Ringdahl, S. (2004). An evolution of communication modalities: very young cochlear implant users who transitioned from sign to speech during the first years of use. International Congress Series, 1273, Cochlear Implants, Proceedings of the VIII International Cochlear Implant Conference, 352-355.

Collison, E.A. & Bass-Ringdahl, S.M. (2007). Babbling complexity and its relationship to speech and language outcomes in children with cochlear implants. Otology & Neurotology, 29, 225-229.

Ringdahl, J.E., Falcomata, T.S., Christensen, T.J., Bass-Ringdahl, S.M., Lentz, A., Dutt, A. & Schuh- Claus, J. (2009). Evaluation of a pre-treatment to select mand topographies for functional communication training. Research in Developmental Disabilities, 30(2), 330-341.

Bass-Ringdahl, S.M. (2010). The relationship of audibility and the development of canonical babbling in young children with hearing impairment. Journal of Deaf Studies and Deaf Education, 15(3), 287-310.

Bass-Ringdahl, S.M., Ringdahl, J.E. & Boelter, E.W. (2010). Use of differential reinforcement to increase hearing aid compliance: a preliminary investigation (in press). The Volta Review, 110(3).

Currently in preparation
Bass-Ringdahl, S.M., Criter, R. & Oleson, J. A comparison of early speech and language outcomes in young children who received bilateral versus unilateral cochlear implants.

Bass-Ringdahl, S.M. & Criter, R. An investigation of canonical babbling in young children with auditory neuropathy and cochlear implants

Book Chapters
Bosch, J. & Bass-Ringdahl, S.M. (in press, anticipated publication Summer 2009). Sensory Impairment.

Bosch, J. & Bass-Ringdahl, S.M. (2010). Sensory Impairment. In Betz, C.L. & Nehring,W.M. (Eds.), Nursing care for individuals with developmental disabilities: An integrated approach. Baltimore, MD: Paul H. Brookes Publishing Co., Inc.

 

Email: ruth-bentler@uiowa.edu
122-B Speech & Hearing Center
319 / 335-8723

Lab website
Hearing Aid Lab

Research interests
Hearing aid technology with emphasis in evaluation of device effectiveness and user satisfaction.

Publications
Bentler, R., Wu, Y-H., Kettel, J., Hurtig, R. (Submitted). Digital Noise Reduction: Outcomes from field and lab studies. International Journal of Audiology.

Ou, H., Bentler, R.A., Dunn, C. (Submitted). Comparison of unilateral cochlear implant adult users and those that use hearing aids and cochlear implants in opposite ears by Satisfaction with Amplification in Daily Life (SADL) scale. International Journal of Audiology.

Shin, M, Wang, S., Bentler, R., He, S. (2007). New feedback detection method for performance evaluation of hearing aids. Sound and Vibration, 302:350-360.

Wu, Y-H., Bentler, R.A. (2007). Using a signal cancellation technique to assess adaptive directivity of hearing aids. Journal of the Acoustical Society of America, 122(1): 496-511.

Henning, R. & Bentler, R. (In Press). Compression and the short-term dynamic range of speech. Journal of Speech-Language-Hearing Research.

Dittberner, A.B. & Bentler, R.A. (2007). Predictive measures of directional benefit. Part 1: A three-dimensional, instrument-based approach to estimating the Directivity Index (DI). Ear & Hearing, 28(1):26-45.

Dittberner, A.B. & Bentler, R.A. (2007). Predictive measures of directional benefit. Part 2: Verification of different approaches to estimating directional benefit. Ear & Hearing, 28(1):46-61.

Palmer, C.P., Bentler, R.A., Mueller, H.G., & Ruscetta, M. (In Press). Self-perceived localization ability with an adaptive directional microphone. American Journal of Audiology.

Bentler, R.A., Chiou (2006). Digital Noise Reduction: An Overview. Trends in Amplification, 10(2):71-82.

Palmer, C., Bentler, R. & Mueller, H.G. (2006). Amplification and the perception of annoying and aversive sounds. Trends in Amplification, 10(2):95-104.

Bentler, R., Palmer, C., & Mueller, H.G. (2006). Evaluation of a second-order directional microphone hearing aid: Speech perception outcomes. Objective test measures. Journal of American Academy of Audiology, 17: 179-189.

Palmer, C., Bentler, R. & Mueller, H.G. (2006). Evaluation of a second-order directional microphone hearing aid: Self-report outcomes. Self-Report outcomes. Journal of American Academy of Audiology, 17: 190-201.

Mueller, H.G., and Bentler, R.A. (2005). Fitting hearing aids using clinical measures of loudness discomfort levels: An systematic review of effectiveness. Journal of American Academy of Audiology, 16:465-477.

Henning, R. & Bentler, R. (2005). Compression-dependent differences in hearing aid gain between speech and non speech signals. Ear and Hearing, 26(4), 409-422.

Bentler, R., Egge, J., Tubbs, J., Dittberner, A. & Flamme, G. (2004). Quantification of directional benefit across different polar response patterns. Journal of the American Academy of Audiology, 15, 649-659.

Bentler, R., Tubbs, J., Egge, J., Flamme, G., & Dittberner, A. (2004). Evaluation of an adaptive directional system in a dsp hearing aid. American Journal of Audiology, 13, 73-79.

Bentler, R., Palmer, C. & Dittberner, A. (2004). Hearing in noise: Comparison of listeners with normal and (aided) impaired hearing. Journal of the American Academy of Audiology, 15, 216-225.

Bentler, R., Niebuhr, D., Johnson, T., & Flamme, G. (2003). Impact of digital labeling on outcome measures. Ear & Hearing, 24, 215-224.

Warner, R. & Bentler, R. (2002). Threshold of discomfort for complex stimuli: Acoustic and sound quality predictors. Journal of Speech-Language-Hearing Research, 45(5),1016-1026 .

Novick, M., Bentler, R., Dittberner, A., & Flamme, G. (2001). The effects of release time and directionality on unilateral and bilateral hearing aid fittings in complex sound fields. Journal of the American Academy of Audiology, 12, 493-504.

Bentler, R.A. & Nelson, J.A. (2001). Effect of spectral shaping on loudness discomfort. Journal of the American Academy of Audiology, 12(8), 431-437.

Bentler, R. & Cooley, L. (2001). An examination of several characteristics that affect the prediction of OSPL90. Ear & Hearing, 22, 3-20.

Bentler, R.A. (2000). List equivalency and test-retest reliability of the Speech in Noise (SIN) test. American Journal of Audiology: A Journal of Clinical Practice, 9, 3-10. Editors Award

Bentler, R.A. & Duve, M. (2000). Comparison of hearing aids over the 20th Century. Ear and Hearing, 21, 625-639.

Bentler, R. & Kramer, S. (2000). Guidelines for choosing an outcome measure. Ear & Hearing, 21, 37S-49S.

Email: carolyn-brown@uiowa.edu
127-A Speech & Hearing Center
319 / 335-8734

Research interests
Auditory physiology with emphasis in electrically evoked potentials and cochlear implants.

Publications
Abbas, P.J., Brown, C.J., Shallop, J.K., Firszt, J.B., Hughes, M.L., Hong, S.H., and Staller, S.J. (1999). Summary of results using the Nucleus CI24M implant to record the electrically evoked compound action potential (EAP). Ear and Hearing. 20 (1), 45-59.

Brown, C.J., Hughes, M., Lopez, S.M. and Abbas, P.J. (1999) The relationship between EABR thresholds and levels used to program the Clarion speech processor. Annals Otology, Rhinology, Laryngology. Suppl 177, 108, 50-57.

Brown, C.J., Abbas, P.J. and Gantz, B.J. (1998). Auditory Nerve Potentials Recorded Using the Neural Response Telemetry System of the Nucleus CI24M Cochlear Implant: Preliminary Data. American Journal of Otology.

Brown, C.J., Abbas, P.J., Borland, J., Bertschy, M. (1996) Electrically evoked whole nerve action potentials in Ineraid cochlear implant users and their relationship to psychophysical performance. Journal of Speech and Hearing Research, 39, 453-467.

Brown, C.J., Abbas, P.J., Bertschy, M., Tyler, R., Lowder, M., Takahashi, G., Purdy, S., and Gantz, B.J. (1995). Longitudinal Assessment of Physiological and Psychophysical Measures in Cochlear Implant Users. Ear and Hearing, 16, 1-11.

Brown, C.J., Abbas, P.J., Fryauf-Bertschy, H., Kelsay, D. and Gantz, B.J. (1994) Intraoperative and Postoperative Electrically Evoked Auditory Brainstem Responses (EABR) in Nucleus Cochlear Implant Users: Implications for the Fitting Process. Ear and Hear, 15, 168-176.

Gantz, B.J., Brown, C.J., and Abbas, P.J. (1994). Intraoperative measures of the electrically evoked auditory nerve compound action potential. American J. of Otology, 15, 137-144.

Email toni-cilek@uiowa.edu
122-D Speech & Hearing Center
319 / 335-8744

Toni Cilek's professional interests are in clincal instruction/supervision in all disorder areas, with special interest in fluency. She also teaches a course in remedial methods of speech and hearing disorders in the public schools.

 

Email: kay-gfeller@uiowa.edu
2040 Voxman Music Building
319 / 335-1657

Joint Appointment
UI School of Music

Professional Interests
Kate Gfeller is director of graduate studies in the Music Therapy area in the School of Music, and holds a secondary appointment in the Department of Speech Pathology and Audiology. Her research focuses on perception of and affective response to music, more specifically in persons with disabilities.

She is also a member of the Iowa Cochlear Implant Team at the University of Iowa Hospitals and Clinics, Department of Otolaryngology. As Principal Investigator for the Music Perception Project, she investigates musical perception and enjoyment by deafened adults who use cochlear implants. She has also been involved in applied research and clinical protocols for aural rehabilitation of children and adults who are deaf or hard of hearing and music therapy practices for adults with Alzheimer's Disease.

Email: ann-fennell@uiowa.edu
115 Speech & Hearing Center
319 / 335-8727

Ann Fennell is a clincal instructor/supervisor with specialty training in voice and voice disorders. She has considerable experience working with professional voice users, including broadcasters, teachers and singers. She also co-teaches the voice disorders course.

Email: eileen-finnegan@uiowa.edu
127-D Speech & Hearing Center
319 / 335-8717

Professional interests
Eileen Finnegan's research is in the area of laryngeal neurophysiology. More specifically, my interest is in studying the role of laryngeal/respiratory reflexes during phonation.

Publications
Bryant, K, Finnegan, EM , &  Berbaum, K, (2011) VFS  Inter-judge Reliability Using a Free & Directed Search, Dysphagia

Kochis-Jennings KA, Finnegan EM , Hoffman HT, & Jaiswal, S.  (2011) Laryngeal Muscle Activity and Vocal Fold Adduction in Chest, Mixed and Head Registers in Females, Journal of Voice

Alipour F, Finnegan EM & Scherer, RC. (2009) Aerodynamic and acoustic effects of abrupt frequency changes in excised larynges.  Journal of Speech, Language, and Hearing Research,52:465-481

Finnegan EM &  Alipour F. (2009). Phonatory effects of supraglottic structures in excised canine larynges,  Journal of Voice, 23(1), 51-61

Finnegan EM, Hoffman, HT, Hemmerich AL, Van Daele, DJ (2009) Clinical Practice: Spasmodic Dysphonia and Vocal Tremor, Perspectives on Voice and Voice Disorders, 66-73

Laukkanen AM  Titze IR Hoffman HT Finnegan EM   (2008) Effects of a Semi-Occluded Vocal Tract on Laryngeal Muscle Activity and Glottal Adduction in a single female subject.  Folia Phoniatrica et Logopaedica 60(6):298-311

Titze IR, Finnegan EM , Laukkanen AM, Fuja M, & Hoffman HT (2008) Laryngeal Muscle Activity in Giggle: A Damped Oscillation Model, Journal of Voice , 22(6):644-8

Palmer PM, Jaffe, DM, McCulloch, TM, Finnegan, EM , Van Daele, DJ, Luschei, ES.  (2008).  Quantitative Contributions of the Muscles of the Tongue, Floor-of-mouth, Jaw and Velum to Intraoral Pressure Generation.  Journal of Speech, Language, and Hearing Research, 51 828-835

Alipour F Jaiswal, S & Finnegan, EM , (2007) Aerodynamic and Acoustic Effects of False Folds and Epiglottis in Excised Larynx Models.  Annals of Otology Rhinology & Laryngology, 116(2): 135-144.

Luschei ES, Ramig LO, Finnegan EM , Baker KL, & Smith ME (2006).  Patterns of laryngeal EMG and the activity of the respiratory system during spontaneous laughter.  Journal of Neurophysiology  96: 442–450.

Email: Stephanie-Fleckenstein@uiowa.edu
120-A Speech & Hearing Center
319 / 335-8755

Stephanie Fleckenstein's professional interests are hearing aids and aural rehabilitation with special interest in pediatric amplification.

Email: alison-scheer@uiowa.edu
Office: 113 Speech & Hearing Center
Phone: 319-335-8703

Research Interests
My primary research interests include the speech of children with sensorimotor speech disorders, Specific Language Impairment (SLI), and craniofacial dysmorphologies, in addition to typical speech acquisition.

Publications
Shriberg, L.D., Fourakis, M., Hall, S.D., Karlsson, H.B., Lohmeier, H. L., McSweeny, J.L., Potter, N.L., Scheer-Cohen, A.R., Strand, E.A., Tilkens, C., & Wilson, D. (2010). Extensions to the Speech Disorders Classification System (SDCS). Clinical Linguistics and Phonetics, 24, 795-824.

Potter, N.L., Scheer-Cohen, A.R., Strand, E.A., Tilkens, C., & Wilson, D. (2010). Extensions to the Speech Disorders Classification System (SDCS). Clinical Linguistics and Phonetics, 24, 795-824.

Shriberg, L.D., Lewis, B.A., Tomblin, J.B., McSweeny, J.L., Karlsson, H.B., & Scheer, A.R. (2006). Toward diagnostic and phenotype markers for genetically transmitted speech delay. Journal of Speech, Language, and Hearing Research, 48, 834-852.

Karlsson, H.B., Shriberg, L.D., Scheer, A., & Nadler, C.J. (2003). Acoustic moments data for palatalized and dentalized sibilant productions from speech delayed children with and without histories of otitis media with effusion (Tech. Rep. No. 12). Phonology Project, Waisman Center , University of Wisconsin-Madison .

Shriberg, L.D., Green, J.R., Campbell , T.F., McSweeny, J.L., & Scheer, A.R. (2003). A diagnostic marker for childhood apraxia of speech: The coefficient of variation ratio. Clinical Linguistics and Phonetics, 17, 575-595.

 

Email: jean-k-gordon@uiowa.edu
125-B Speech & Hearing Center
319 / 335-8729

Research
My research focuses on the process of word retrieval in normal speakers, and in speakers with acquired neurogenic language disorders (particularly aphasia). I am interested in exploring the factors which make words easier or harder to retrieve, and how these factors influence the production of speech errors. To investigate these questions, I use a combination of behavioural experimentation and computational modeling approaches.

Member of the Delta Center

Selected Publications

Gordon, J.K. & Kindred, N.K. (2011). Word retrieval in aging: An exploration of the Task Constraint hypothesis. Aphasiology, 25(6/7), 774-788.

Gordon, J.K. (2008). Measuring the lexical semantics of picture description in aphasia, Aphasiology, 22(7/8), 839-852.

Gordon, J.K. (2007). A contextual approach to facilitating word retrieval in non-fluent aphasia, Aphasiology, 21(6/7/8), 643-657.

Email: melissa-duff@uiowa.edu
121-D Speech & Hearing Center
319-384-4702

Research
Melissa Duff's research interests include the cognitive processes and neural substrates supporting real-world learning, complex communication, and social interaction.

Member of the Delta Center

Selected publications
Duff, M.C., Gupta, R., Hengst, J., Tranel, D., & Cohen, N.J. (2011). The use of definite references signals declarative memory: Evidence from hippocampal amnesia. Psychological Science, 22(5), 666-673.

Duff, M.C., Hengst, J., Gupta, R., Tranel, D. & Cohen, N.J. (2011). Distributed impact of cognitive-communication impairment: Disruptions in the use of definite references when speaking to individuals with amnesia. Aphasiology, 25 (6-7), 675-687.

Kurczek, J., & Duff, M.C. (2011). Cohesion, coherence, and declarative memory: Discourse patterns of patients with hippocampal amnesia. Aphasiology, , 25 (6-7), 700-712.

Gupta, R., Duff, M.C., & Tranel, D. (2011). Bilateral amygdala damage impairs the acquisition and use of common ground in social interaction. Neuropsychology, 25(2), 137-146. 

Feinstein, J.S., Duff, M.C., & Tranel, D. (2010). Evidence for the sustained experience of emotion beyond declarative memory. Proceedings of the National Academy of Science, 107 (17), 7674-7679.

Hengst, J.A., Duff, M.C., & Dettmer, A. (2010) Rethinking repetition in therapy: Repeated engagement as the social ground of learning. Aphasiology, 24, (6 -8), 887 – 901.

Duff, M. C. (2009, July 14). Management of sports-related concussion in children and adolescents. The ASHA Leader , 14(9), 10–13.

Duff, M.C ., Hengst, J., Tranel, D., & Cohen, N.J. (2009). Hippocampal amnesia disrupts verbal play and the creative use of language in social interaction. Aphasiology , 23 (7), 926-939.

Gupta, R., Duff, M.C., Denburg, N.L., Cohen, N.J., Bechara, A. & Tranel, D. (2009). Declarative memory is critical for sustained advantageous complex decision-making. Neuropsychologia, 47(7), 1686–1693.

Duff, M.C., Wszalek, T., Tranel, D., & Cohen, N.J. (2008). Successful life outcome and management of real-world memory demands despite profound anterograde amnesia. Journal of Clinical and Experimental Neuropsychology , 30 (8), 931-945.

Duff, M.C., Hengst, J., Tengshe, C., Krema, A. Tranel, D., & Cohen, N.J. (2008). Hippocampal amnesia disrupts the flexible use of procedural discourse in social interaction. Aphasiology , 22 (7, 8), 866-880 .

Duff, M.C., Hengst, J., Tranel, D., & Cohen, N.J. (2008). Collaborative discourse facilitates efficient communication and new semantic learning in amnesia. Brain and Language , 106 (1), 41-54.

Hengst, J., Duff, M.C., & Prior, P. (2008). Multiple voices in clinical discourse and as clinical intervention. International Journal of Language and Communication Disorders, 43, 58-68 .

Duff, M.C., Hengst, J., Tranel, D., & Cohen, N.J. (2007). Talking across time: Using reported speech as a communicative resource in amnesia. Aphasiology, 21 (6, 7, 8), 702-716.

Hengst, J. & Duff, M.C. (2007). Clinicians as communication partners: Developing a mediated discourse elicitation protocol. Topics in Language Disorders , 27, 36-47.

Duff, M.C., Hengst, J., Tranel, D., & Cohen, N.J. (2006). Development of shared information in communication despite hippocampal amnesia. Nature Neuroscience , 9 (1), 140-146.

Duff, M.C., Proctor, A., & Haley, K. (2002). Mild traumatic brain injury (TBI): Assessment and treatment procedures used by speech-language pathologists (SLPs). Brain Injury, 16 (9), 773-787.

Email: lenore-holte@uiowa.edu
148 Center for Disabilities & Development
319 / 356-1168

Research Interests
Lenore Holte's professional interests include the hearing assessment of children and adults with disabilities, immittance audiometry, and newborn hearing screening.

Publications
Holte, Prickett, Van Dyke, Olson, Lubrica, Knutson, Knutson, and Brennan (2006). Issues in the management of infants and young children who are deaf-blind, Infants and Young Children, 19, 4, 323 - 322.

Holte, Prickett, Van Dyke, Olson, Lubrica, Knutson, Knutson, and Brennan (2006). Issues in the evaluation of infants and young children who are suspected of or who are deaf-blind, Infants and Young Children, 19, 3, 213 – 227.

Holte, L.A. (2003). Early childhood hearing loss: A frequently overlooked cause of speech and language delay, Pediatric Annals, June 2003.

Margolis, RH., Bass-Ringdahl, S., Hanks, W.D., Holte, L., and Zapala, D.A. (2003). Tympanometry in newborn infants - 1kHz Norms. Journal of the American Academy of Audiology, 14, 7, 383-392.

Downey, D., Mraz, R., Knott, J., Knutson, C., Holte, L., and Van Dyke, D. (2002). Diagnosis and evaluation of children who are not talking. Infants and Young Children, 15, 38-48.

Holte, L.A. and Margolis, R.H. (2002). Contemporary research in tympanometry, Current Opinion in Otolaryngology, October 2002.

Bentler, R., Holte, L.A., Turner, C.W. (1999). An update on the acclimatization issue, Hearing Journal, 52,44-46.

Holte, L. A. (1996). Aging effects in multifrequency tympanometry. Ear and Hearing, 17, 12-18.

Holte, L. A., Margolis, R.H., Cavanaugh, R.M. (1991). Developmental changes in multifrequency tympanograms. Audiology, 30,1-24.

Holte, L.A., Cavanaugh, R.M., and Margolis, R.H. (1990). Ear canal wall mobility and tympanometric shape in young infants. Journal of Pediatrics. 77-80.

Holte, L.A. and Margolis, R.H. (1987). Screening tympanometry. Seminars in Hearing, 8, 329-338.

Holte, L.A. and Margolis, R.H. (1987). The relative loudness of third-octave bands of speech. Journal of the Acoustical Society of America. 81, 186-190.

Turner, C.W. and Holte, L.A. (1987). Discrimination of spectral peaks by normal and hearing impaired subjects. Journal of the Acoustical Society of America, 81, 445-451.

Turner, C.W. , Holte, L.A., and Relkin, E. (1987) Auditory filtering and the discrimination of spectral shapes by normal and hearing impaired subjects. Journal of Rehabilitation Research and Development, Fall, 1987, 229-238.

Turner, C.W. and Holte, L.A. (1985). Evaluation of FM amplification systems. Hearing Instruments, 36, 7, 612.

Email: richard-hurtig@uiowa.edu
120-B Speech & Hearing Center
319 / 335-8730

Research
Richard Hurtig's broad research interest is uncovering general invariants of perceptual and cognitive processes involved in human communication.

Laboratory website

Class websites
003:117 Psychology of Language

003:218 Psycholinguistics

Inventions and Patents
Hurtig, R.R., & Turner, C. (2003). Apparatus and Methods for Proportional Audio Compression and Frequency Shifting. U.S. Patent # 6577739, The University of Iowa.

Hurtig, R.R., & Clark, B. (1987). Broadband spectral compression (for sensory aids and signal transmission system). The University of Iowa .

Selected publications
Mueller, V. & Hurtig, R. (2010) Technology-Enhanced Shared Reading with Deaf and Hard-of-Hearing Children: the Role of a Fluent Signing Narrator. Journal of Deaf Studies and Deaf Education , 15 (1): 72-101.

Hurtig, R. & Downey, D. (2009) Augmentative and Alternative Communication in Acute and Critical Care Settings . Plural Publishing Inc., San Diego, California

Bentler, R., Wu, Y-H., Kettel, J., Hurtig, R. (2008). Digital Noise Reduction: Outcomes from field and lab studies. International Journal of Audiology , 47(8): 447-460.

Shibata, T. & Hurtig, R.R. (2008) “Prosody Acquisition by Japanese Learners” in Understanding Second Language Process (SH Han Ed.) (Chapter 10). Multilingual Matters, Clevendon UK

Roch, Marie, Hurtig, RR, Huang, T, Liu, J, Arteaga, SM (2007) “Foreground auditory scene analysis for hearing aids” Pattern Recognition Letters , 28 (11) 1351-1359.

Peng, Shu-Chen, Tomblin JB, Spencer L, Hurtig R.R. “Imitative Production of Rising Speech Intonation in Pediatric Cochlear Implant Recipients” (2007) JSLHR, 50 (5),1210-1227.

Downey, D. & Hurtig, R. (2006). “Rethinking the use of AAC in Acute care Settings.” Perspectives on AAC , 15(4) (3-8).

Peng, Shu-Chen, Tomblin, J Bruce, Spencer, Linda J., Hurtig, Richard R. (2004). Acquisition of rising intonation in pediatric cochlear implant recipients – a longitudinal study. Elsevier, International Congress Series 1273 (336-339).

Email: lindsay-prusick@uiowa.edu
319 / 384-6456

Email: michael-karnell@uiowa.edu
125-D Speech & Hearing Center
319 / 335-6629

Joint appointment
Department of Otolaryngology-Head & Neck Surgery

Related Websites
Department of Otolaryngology-Head & Neck Surgery
Michael Karnell's full CV
Otolaryngology Voice and Swallowing Research Center

Research interests
Normal and disordered laryngeal physiology and voice production, velopharyngeal physiology and resonance disorders with special interest in cleft palate and swallowing disorders.

Publications
Andrews BT, Van Daele DJ, Karnell MP , Mcculloch TM, Graham SM, Hoffman HT.  (2008) Evaluation of open approach and injection laryngoplasty in revision thyroplasty procedures.  Otolaryngology-Head and Neck Surgery, 138, 226-232.

Flores RL, Jones BL Berstein J, Karnell M , Canady, J, Cutting CB.  (2010) Tensor veli palatini preservation, transection, and transection with tensor tenopexy during cleft palate repair and its effects on Eustachian tube function.  Plastic and Recostructive Surgery, 125 (1), 282-289.

Conrad AL, Dailey S, Richman L, Canady J, Karnell MP , Axeson E, Nopoulos P.  (2010) Cerebellum structure differences and relationship to speech in boys and girls with non-syndromic cleft of the lip and/or palate.  American Cleft Palate-Craniofacial Journal, 47, 469-475.

Ames JA, Karnell LH, Gupta AK, Coleman TC, Karnell MP , Van Daele DJ, Funk, GF.  (2010) Outcomes following the use of gastrostomy tubes in patients whose head and neck cancer was managed with radiation therapy.  Head and Neck, ePub.

Shune SE, Karnell LH, Karnell MP, Van Daele DJ, Funk GF.  (In Press)  The association between severity of dysphagia and survival in patients with head and neck cancer.  Head & Neck.

Books
Textbook Handbook of Cleft Palate Speech: A Clinician's Guide to Diagnosis and Therapy. Peterson-Falzone, S.J., Karnell, M.P., Hardin-Jones, M.A., Cardamone, J.E. Mosby, Due: 2004.

Textbook. Peterson-Falzone, S.J., Karnell, M.P., Hardin-Jones, M.A. Cleft Palate Speech. Mosby, 2001.

Textbook. Karnell, M.P. Videoendoscopy: From Velopharynx to Larynx. Singular Publishing Group, 1994.

Email: danielle-kelsay@uiowa.edu
113 Speech & Hearing Center
319 / 335-8754

Clinical/Research Interests
Hearing impairment, its impact on the pediatric population and provision of comprehensive aural (re)habilitation services to hearing impaired children and their families

Publications
Hughes, M.L., Vander Werff, K.R., Brown, C.J., Abbas, P.J., Kelsay, D.M.R., Teagle, H.F.B. & Lowder, M.W. (2001). A Longitudinal Study of Electrode Impedance, the Electrically Evoked Compound Action Potential, and Behavioral Measures in Nucleus 24 Cochlear Implant Users. Ear and Hearing, 22, 471-486.

Spencer, L.J., Tye-Murray, N., Kelsay, D.M.R., Teagle, H. (1998). Learning to use the cochlear implant: A child who beat the odds. American Journal of Audiology, 7, 1, 24-29.

Fryauf-Bertschy, H., Tyler, R.S., Kelsay, D.M.R., Gantz, B.J. & Woodworth, G.P. (1997). Cochlear implant use by prelingually deafened children: The influences of age at implant and length of device use. Journal of Speech and Hearing Research, 40, 183-199.

Kelsay, D.M.R. & Tyler, R. (1996). Advantages and Disadvantages Expected and Realized by Pediatric Cochlear Implant Recipients as Reported by Their Parents. American Journal of Otology, 17, 866-873.

Kelsay, D.M.R. & Tyler, R. (1996). Children and Cochlear Implants, in Hearing Care for Children, (Martin, F. & Clark, J., Eds.). Allyn & Bacon.

Tye-Murray, N., Witt, S., Schum, L., Kelsay, D., & Schum, D. (1994). Feasible Aural Rehabilitation Services for Busy Clinical Settings. American Journal of Audiology, 3, 3, 33-37.

Brown, C.J., Abbas, P.J., Fryauf-Bertschy, H., Kelsay, D. & Gantz, B.J. (1994). Intraoperative and postoperative electrically evoked auditory brain stem responses in Nucleus cochlear implant users: Implication for the fitting process. Ear and Hearing, 15, 168-176.

Tye-Murray, N. & Kelsay, D.M.R. (1993). A communication training program for parents of cochlear implant users. Volta Review, 95, 22-31.

Fryauf-Bertschy, H., Tyler, R.S., Kelsay, D.M. & Gantz, B.J. (1992). Performance over time of congenitally deaf and postlingually deafened children using a multichannel cochlear implant. Journal of Speech and Hearing Research, 35, 4, 913-920.

Tyler, R.S. & Kelsay, D.M. (1990). Advantages and disadvantages reported by some of the better cochlear implant patients. American Journal of Otology, 11, 4, 282-289.

Email: linda-louko@uiowa.edu
116-A Speech & Hearing Center
319 / 335-8698

Link to Dr. Louko's CV (in pdf)

Email: karla-mcgregor@uiowa.edu
121-C Speech & Hearing Center
319 / 335-8724

Research
Dr. McGregor is interested in how children learn words. To address this question, she explores individual differences in word learning by comparing children with specific language impairment or autism to children who are developing normally. She has also explored variation within the population of normal learners including comparisons of children developing at a typical rate and those who are very precocious and comparisons of children from different language communities.

Laboratory website
Word Learning Lab

Member of the Delta Center

Selected publications
McGregor, K. K., Berns, A., Owen, A.J., & Michels, S., Duff, D., Bahnsen, A.J., & Lloyd, M. (2011). Associations between syntax and the lexicon among children with or without ASD and language impairment. Journal of Autism and Developmental Disorder. DOI 10.1007/s10803-011-1210-4.

McGregor, K.K., Rost, G.C., Guo, L.Y., Sheng, L. (2010). What compounds mean to children with SLI. Applied Psycholinguistics , 31 , 463–487.

Sheng, L., & McGregor, K.K. (2010). Lexical-semantic organization in children with specific language impairment. Journal of Speech, Language, and Hearing Research. 53. 146-159 .

Sheng, L., & McGregor, K.K. (2010). Object and action naming in children with specific language impairment. Journal of Speech, Language, and Hearing Research, 53 , 1704-1719.

McGregor, K.K., Rohlfing, K., Bean, A., & Marschner, E. (2009). Gesture as a support for word learning: The case of under . Journal of Child Language, 36, 807-828.

Booth, A.E., McGregor, K.K. & Rohlfing, K.J. (2008). Socio-pragmatics and attention: Contributions to gesturally guided word learning in toddlers. Language Learning and Development, 4 , 179-202.

McGregor, K.K., Sheng, L., & Ball, T. (2007). Complexities of word learning over time. Language, Speech, and Hearing Services in Schools, 38 , 1 – 12.

Hashimoto, N., McGregor, K.K., & Graham, A. (2007). Conceptual organization at six and eight: Evidence from the semantic priming of object decisions. Journal of Speech, Language, and Hearing Research, 50, 161-176.

Smith, B., McGregor, K.K., & DeMille, D. (2006). Phonological development in lexically precocious two-year-olds. Applied Psycholinguistics, 27, 355-375.

Newman, R.M., & McGregor, K.K. (2006). Teachers and laypersons discern quality differences in narratives produced by children with or without SLI. Journal of Speech, Language, and Hearing Research, 49, 1022-1036 .

Sheng, L., McGregor, K.K., & Marian, V. (2006). Lexical-semantic organization in bilingual children: Evidence from a repeated word association task. Journal of Speech, Language, and Hearing Research, 49 , 572-587.

Email: yu-hsiang-wu@uiowa.edu
Office: B1 Speech & Hearing Center
319/384-4549

Research interest
Factors that determine the success of hearing aid amplification

Publications
Wu, Y. H., & Bentler, R. A. (in press). Do older adults have social lifestyles that place fewer demands on hearing? Journal of the American Academy of Audiology.

Wu, Y. H. , & Bentler, R. A. (in press). Clinical measures of directivity: assumption, accuracy, and reliability. Ear and Hearing.

Wu, Y. H. , & Bentler, R. A. (2011). A method to measure hearing aid directivity index and polar pattern in small and reverberant enclosures, International Journal of Audiology, 50, 405-416.

Wu, Y. H. , & Bentler, R. A. (2010). Impact of visual cues on directional benefit and preference: Part 1 - laboratory tests. Ear and Hearing, 31, 22-34.

Wu, Y. H. , & Bentler, R. A. (2010). Impact of visual cues on directional benefit and preference: Part 2 - field tests. Ear and Hearing, 31, 35-46.

Wu, Y. H. (2010). The effect of age on directional microphone hearing aid benefit and preference. Journal of the American Academy of Audiology, 21, 78-89.

Wu, Y. H. , & Bentler, R. A. (2009). Using a signal cancellation technique involving impulse response to assess directivity of hearing aids. Journal of the Acoustical Society of America, 126, 3214-3226 .

Bentler, R. A., Wu, Y. H. , Kettel, J., & Hurtig, R. (2008). Digital Noise Reduction: Outcomes from laboratory and field studies. International Journal of Audiology, 47 , 447-460.

Wu, Y. H. , & Bentler, R. A. (2007). Using a signal cancellation technique to assess adaptive directivity of hearing aids. Journal of the Acoustical Society of America, 122 , 496-511.

Email: jerald-moon@uiowa.edu
122-E Speech & Hearing Center
319 / 335-8722

Research
Research interests: Speech aerodynamics, velopharyngeal function, and articulatory coordination.

Class websites
003:110 Phonetics: Theory and Applications
003:112 Anatomy and Physiology of Speech Production

Selected publications
Malick, D., Moon, J., Canady, J. (2007) Stress velopharyngeal insufficiency: prevalence, treatment, and management practices. Cleft Palate-Craniofacial Jour , 44, 424-433.

Moon, J., Kuehn, D., Chan G, Zhao, L. (2007) Induced velopharyngeal fatigue effects in speakers with repaired palatal clefts. Cleft Palate-Craniofacial Jour , 44 , 251-260.

Kuehn, D., and Moon, J. (2005). Histologic study of intra-velar structures in normal human adult specimens. Cleft Palate-Craniofacial Jour , 42 , 481-489.

Sharp, H., Dailey, S., and Moon, J. (2003). Speech and language development disorders in infants and children with cleft lip and palate. Pediatric Annals , 32, 476-480.

Moon, J., Collins, D., and Canady, J. (2003) Single motor unit activity in levator veli palatine during speech and nonspeech tasks. Cleft Palate-Craniofacial Jour , 40 ,256-262.

Kuehn, D. and Moon, J. (2000) Induced fatigue effects on velopharyngeal closure force. Jour. Speech Hear. Res. , 43 , 486-500.

Berry, D., Moon, J., and Kuehn, D. (1999) A histologically-based finite element model of the soft palate. Cleft Palate-Cranio. Jour., 36, 217-223.

Moon, J., Thompson, S., Jaeckel, E., and Canady, J. (1998) Muscle fiber type distribution in the normal human levator veli palatini muscle. Cleft Palate-Cranio. Jour., 35, 419-424.

Barsoumian, R., Kuehn, D., Moon, J., and Canady, J. (1998) An anatomic study of the tensor veli palatini and dilatator tubae muscles in relation to eustachain tube and velar function. Cleft Palate - Cranio. Jour.,35, 101-110.

Kuehn, D., and Moon, J. (1997) Velopharyngeal closure force and levator veli palatini activation levels in relation to varying phonetic contexts. Jour. Speech Hear. Res. , 41, 51-62.

Email: diane-niebuhr@uiowa.edu
122-C Speech & Hearing Center
319 / 335-8743

Professional interests
Diagnostic audiology and aural rehabilitation with a special interest in hearing aids and rehabilitation of adults with acquired hearing loss.

 

Email: amanda-owen-vanhorne@uiowa.edu
121-A Speech & Hearing Center
319 / 335-6951

Lab website
Grammar Acquisition Lab

Research
My primary research interests lie in complex sentence production and comprehension in typically developing children and children with Specific Language Impairment. I am particular interested in exploring the linguistic factors that influence difficulties with grammatical accuracy. As a secondary focus, I am interested in differentiating between actual linguistic knowledge (competence) and language production abilities (performance) in children.

Member of the Delta Center

Publications
Achenbaugh, W. & Owen Van Horne, A.J., (submitted) Syntactic complexity and grammatical accuracy trade-offs in typical children and children with SLI. Clinical Linguistics and Phonetics.

Koehlinger, K.K., Owen Van Horne, A.J., & Moeller, M.P., (submitted). Grammatical outcomes of 3 & 6 year old children with mild-severe hearing loss. Journal of Speech, Language, & Hearing Research

Guo, L.Y., Owen Van Horne, A.J., & Tomblin, J.B., (in press). The role of developmental levels in examining the effect of subject types on the production of auxiliary 'is' in young English-speaking children. Journal of Speech, Language, & Hearing Research.

Owen Van Horne, A.J., & Lin, .S.J, (in press) Cognitive state verbs and verb complements in children with SLI and their typically developing peers. Clinical Linguistics & Phonetics.

Guo, L.Y., Owen, A.J., Tomblin, J.B., (2010). Effect of subject types on the production of auxiliary ‘is’ in young English-speaking children. Journal of Speech, Language, & Hearing Research, 53,1720-1741.

Owen, A.J. (2010). Factors affecting accuracy of past tense production in children with SLI: What can verb type, clause type, and sentence type tell us about current theoretical approaches? Journal of Speech, Language, & Hearing Research, 53, 993-1014.

Owen, A.J., & Leonard, L.B. (2007). The overgeneralization of nonfinite complements to finite contexts: The case of decide. Journal of Child Language. 34, 545-570.

Owen, A.J., & Leonard, L.B., (2006). The production of finite and nonfinite complement clauses by children with SLI and their typically developing peers. Journal of Speech, Language, & Hearing Research, 49, 548-571.

Owen, A. J., & Leonard, L.B., (2002). Lexical diversity in the spontaneous speech of children with specific language impairment: Application of D. Journal of Speech, Language, & Hearing Research, 45, 927-937.