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Performing Repeated Intraoperative Impedance Telemetry Measurements during Cochlear Implantation
Published on: August 4, 2023
Modulation rate discrimination using half-wave rectified and sinusoidally amplitude modulated stimuli in
Heather A Kreft1, Andrew J Oxenham, David A Nelson
1Department of Otolaryngology, Clinical Psychoacoustics Laboratory, University of Minnesota, Rm 8-323 Phillips-Wangensteen Building, 420 Delaware Street Southeast, Minneapolis, Minnesota 55455, USA. plumx@umn.edu
The Journal of the Acoustical Society of America
|February 9, 2010
Summary
Cochlear implant users
Area of Science:
- Auditory Neuroscience
- Speech and Hearing Science
Background:
- Cochlear implants (CIs) bypass damaged structures in the inner ear.
- Understanding pitch perception in CI users is crucial for improving speech understanding.
- Temporal fine structure (TFS) plays a role in low-frequency pitch perception in acoustic hearing.
Purpose of the Study:
- To compare modulation rate discrimination for two stimulus types in cochlear-implant users.
- To investigate if simulating low-frequency temporal fine structure improves pitch perception in CI users.
Main Methods:
- Cochlear implant users participated in the study.
- Detection and modulation rate discrimination were measured.
- Stimuli included sinusoidally amplitude-modulated pulse-trains and half-wave rectified sinusoids.
Main Results:
- Modulation rate discrimination was not statistically different between the two stimulus types.
- Results contrasted with findings from acoustic hearing studies.
- Pitch perception in CI users did not benefit from stimuli simulating low-frequency TFS.
Conclusions:
- Simulating low-frequency temporal fine structure does not enhance pitch perception in cochlear-implant users.
- This finding differs from the benefits observed in binaural perception.
- Further research is needed to optimize pitch encoding strategies for cochlear implants.
