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Auditory implant research at the House Ear Institute 1989-2013
1Department of Otolaryngology, University of Southern California, Keck School of Medicine of USC, 806 W. Adams Blvd, Los Angeles, CA 90007-2505, USA.
Hearing Research
|December 3, 2014
Summary
House Ear Institute research advanced auditory implant technology, improving cochlear implant (CI) and auditory brainstem implant (ABI) outcomes. Studies revealed optimal speech recognition with fewer signal bands and highlighted auditory training benefits.
Area of Science:
- Neuroscience
- Biomedical Engineering
- Audiology
Background:
- The House Ear Institute (HEI) has a significant history in auditory implant innovation.
- This paper focuses on HEI's advanced basic research in perceptual capabilities and signal processing for cochlear implants (CI) and auditory brainstem implants (ABI).
Observation:
- Psychophysical studies characterized electrical stimulation's loudness and temporal properties.
- Speech studies using a noise-band vocoder indicated that four tonotopically arrayed bands suffice for speech recognition, with most users receiving more.
- Manipulations of electric fields showed potential for enhanced tonotopic selectivity.
Findings:
- Speech recognition was minimally affected by stimulation pulse rate.
- Auditory training demonstrated significant promise for enhancing speech recognition in all patients.
- Research advanced the understanding of electrical stimulation for hearing and improved CI and ABI device outcomes.
Implications:
- Findings contribute to improved patient outcomes with cochlear implants and auditory brainstem implants.
- This research enhances the basic scientific understanding of electrical stimulation for hearing restoration.
- The work at HEI has significantly advanced the field of auditory implants.