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Auditory Prosthesis Lab


Li Xu


W249 Grover Center


About the Facility
The goal of research in this laboratory is to understand the mechanisms of hearing and speech perception under electrical stimulation and thus to find ways to improve speech and music perception in patients with cochlear implants. We study speech and music perception in patients with cochlear implants and in normal-hearing subjects using acoustic simulations. Current research projects include spectral and temporal features of stimulation for phoneme perception and for lexcial-tone perception, tone development in children, and melody perception.

This laboratory is equipped with the clinical cochlear-implant programming systems from Cochlear Corporation and Advanced Bionics Corporation. It also has a TDT System 3 for psychoacoustics and neurophysiology experiments. A sound-attenuating booth and computers that are used for control of sound delivery and for data collection and analysis are in place.


The research in this laboratory is supported by both internal and external grants. Collaboration with Dr. Bryan E. Pfingst at Kresge Hearing Research Institute, University of Michigan and with physicians and scientists at Beijing Tongren Hospital/Beijing Institute of Otorhinolaryngology has been established.


Recent presentations and publications from this laboratory can be viewed on Li Xu's personal Web site.