Jay J. Bauer, Ph.D. 

Assistant Professor 

Interests and Expertise
Dr. Bauer's general research interests are speech physiology and speech motor control. As director of the speech physiology laboratory he hopes to better understand how the brain controls the voice during phonation and speech. In particular, Dr. Bauer's research focuses on the role of auditory feedback in control of voice fundamental frequency (F0), intensity, and formant frequencies. A behavioral perturbation approach is currently being used to study the vocal corrections in voice F0 and intensity during speech and non-speech tasks in response to online alterations in pitch and loudness feedback. Short-latency vocal compensations in response to perturbations in the acoustic properties of the auditory feedback have been observed in normally functioning adults. Recent data indicate that auditory feedback is used functionally to control and maintain the suprasegmental (emotional content) of English speech.

Ongoing research in the lab has investigated differences between the vocal compensations to perturbed auditory feedback during speech and non-speech tasks in individuals that stutter and control participants. In an effort to better understand specific neural generators of the vocal responses, Dr. Bauer plans to investigate ways to integrate the behavioral perturbation paradigm with neurophysiologic methods such as function magnetic resonance imaging (fMRI) and auditory evoked potentials (AEP).

Recent Publications
Bauer, J. J., Mittal, J., Larson, C. R., & Hain, T. C. (2006). "Vocal responses to unanticipated perturbations in voice loudness feedback: An automatic mechanism for stabilizing voice intensity." The Journal of the Acoustical Society of America 119 (4), 2363-2371.

Sivasankar, M., Bauer, J. J., Babu, T., & Larson, C. R. (2005). "Vocal responses to changes in pitch of voice or tone feedback." The Journal of the Acoustical Society of America 117 (2), 850 – 857.

Xu, Y., Larson, C. R., Bauer, J. J., and Hain, T. C. "Compensation for pitch-shifted auditory feedback during Mandarin tones," (2004) The Journal of the Acoustical Society of America 116 (2), 1168 – 1178

Leydon, C., Bauer, J. J., and Larson, C. R. (2003). "The role of auditory feedback in sustaining vocal vibrato." The Journal of the Acoustical Society of America 114 (3), 1575-1581.

Bauer, J. J., and Larson, C. R. (2003). "Audio-vocal responses to repetitive pitch-shift stimulation during a sustained vocalization: Improvements in methodology for the pitch-shifting technique," The Journal of the Acoustical Society of America 114 (2), 1048 – 1054.

Larson, C. R., Burnett, T. A., Bauer, J. J., Kiran, S., & Hain, T. C. (2001). "Comparison of voice F0 responses to pitch-shift onset and offset conditions (L)," The Journal of the Acoustical Society of America 110 (6), 2845 – 2848.

Speaker Topics 
Laboratory Instrumentation
Anatomy and Physiology of the Speech Language and Hearing Mechanisms
Research Methodology and Ethics
Speech Science

Education
Ph.D., Northwestern University, Communication Sciences and Disorders, 2004
M.A. Northwestern University, Speech-Language Pathology, 2001
B.Sc., Northwestern University, Human Communication Sciences, 1996