Seminars in Hearing Research at Purdue (SHRP)

Title:  Improved Neural Responses in Cochlear Implants Using a Physiologically Based Stimulation Strategy: Preliminary Results

Speaker(s): Andres Llico Gallardo, Ph.D. student, Weldon School of Biomedical Engineering

Date: Nov 07, 2019
Time: 10:30 – 11:20 am
Location: LYLE 1150

Abstract:

Cochlear implants (CI) are implantable devices capable of partially restoring hearing loss by electrically stimulating the auditory nerve to mimic normal-hearing conditions. Resulting speech perception varies among CI users, depending mostly on their deafness and surrounding noise conditions. Current electrical-stimulation strategies are often developed following phenomenologically based approaches instead of being derived from known physiological functions of the auditory system. The framework developed in this study seeks to provide an optimized electrical-stimulation strategy by maximizing the similarity between simulated neural patterns elicited in the auditory nerve by acoustic and electrical means. Preliminary results show increased correlation and reduced mean square error between acoustic and electric stimulation when the proposed optimized strategy is used instead of a commonly used CI strategy that stimulates electrodes based on spectral energy content.

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The working schedule for the year:

https://purdue.edu/TPAN/hearing/shrp_schedule

The titles and abstracts of the talks will be updated here:

https://purdue.edu/TPAN/hearing/shrp_abstracts