QPR 1: First Quarterly Progress Report for NIH Project N01-DC-2-1002 (April 1 through June 30, 2002) -- Speech Processors for Auditory Prostheses
The main objective of this project is to design, develop, and evaluate speech processors for implantable auditory prostheses. Ideally, such processors will represent the information content of speech in a way that can be perceived and utilized by implant patients. An additional objective is to record responses of the auditory nerve to a variety of electrical stimuli in studies with patients. Results from such recordings can provide important information on the physiological function of the nerve, on an electrode-by-electrode basis, and can be used to evaluate the ability of speech processing strategies to produce desired spatial or temporal patterns of neural activity. Work and activities in this quarter included: • Continuing studies with local subject ME-12, implanted bilaterally with Med-El Tempo devices • Visits and presentations by seven candidates for positions within the Center for Auditory Prosthesis Research, culminating in the hiring of Dr. Xiaoan Sun to join the group in August as an electrical engineer • Two weeks of studies with percutaneous subject SR-3 (May 14-23), who uses a Med-El CISLink processor with her Ineraid implanted electrodes • Participation by Reinhold Schatzer in the International Conference on Acoustics Speech and Signal Processing, May 13-17, in Orlando, FL • Invited presentation by Dewey Lawson as part of the annual Prentice Bloedel Day (May 20) at the Virginia Merrill Bloedel Hearing Research Center of the University of Washington in Seattle. The presentation was part of a gala program honoring Francis A. Spelman, long time research affiliate of the Center • Two weeks of studies (June 3-14) with subject NU-6, implanted bilaterally with Cochlear Corp. Nucleus 24 devices • A visit June 6-7 by Dr. Joachim Müller, head of clinic in the Department of Otolaryngology of the University of Würzburg • A June 6 visit and lecture by Dr. Enrique A. Lopez-Poveda of the Medical Faculty of the University of Castille - La Mancha. During the visit, Dr. Lopez-Poveda agreed to become a consultant to this project, and we are delighted to announce that his appointment is now official • Three weeks of studies with ME-15, a new subject implanted bilaterally with Med-El devices and now using Tempo processors along with external microphones and mixing circuits of his own design (June 17-28).