Seminars in Hearing Research at Purdue

Students, post docs, and faculty with interests in all aspects of hearing meeting weekly to share laboratory research, clinical case studies, and theoretical perspectives. Topics include basic and translational research as well as clinical practice. Participants are welcome from all of Purdue University including Speech, Language, and Hearing Science (SLHS), Biology (BIO), Biomedical Engineering (BME), Mechanical Engineering (ME), and Electrical Engineering (EE). Seminars provide an ideal venue for students to present their work with a supportive audience, for investigators to find common interests for collaborative efforts, and for speakers from outside Purdue to share their work. This seminar is partially supported by the Association for Research in Otolaryngology.

2018-2019 Talks

Past Talks

LYLE 1150: 1030-1120am (link to schedule)

April 25, 2019

Edward Bartlett/Marisa Dowling

Effects of Training and Corticofugal Modulation on Startle Behavior and Auditory Physiology

Abstract: T As languages utilize noisy time varying frequency trajectories, also known as pitch sweeps, to convey speech information, it is important to understand the impacts of training as a potential means to preserve noisy pitch sweep processing with aging, for example.  In addition, it is unclear which circuit elements may mediate training-related changes.  We hypthesize that top-down feedback via corticocollicular modulation may be involved.  Neuromodulation, specifically pharmacogenetics, can be used to inhibit the neural pathway of interest to determine the significance of its role in comlex speech processing.  The consequences of training and A1-1C pathway inhibition were investigated using behavioral and electrophysiological measurements.  Behavioral noisy time varying pitch sweep discrimination abilities were measure using prepulse inhibition of acoustic startle response.  Eletrophysiological measurements of brain activities were assessed by envelope following responses (EFR). 

 

 

 

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