Channel interaction in cochlear implants as a function of phase duration and pulse rate

2004 ◽  
Vol 115 (5) ◽  
pp. 2385-2385
Author(s):  
Deniz Başkent ◽  
Robert V. Shannon
Keyword(s):  
Cochlear Implants ◽  
Pulse Rate ◽  
Phase Duration ◽  
Channel Interaction

scholarly journals An Attempt to Improve Bilateral Cochlear Implants by Increasing the Distance between Electrodes and Providing Complementary Information to the Two Ears

2010 ◽  
Vol 21 (01) ◽  
pp. 052-065 ◽  
Author(s):  
Richard S. Tyler ◽  
Shelley A. Witt ◽  
Camille C. Dunn ◽  
Ann Perreau ◽  
Aaron J. Parkinson ◽  
...  
Keyword(s):  
Speech Perception ◽  
Cochlear Implant ◽  
Cochlear Implants ◽  
Speech Processing ◽  
Processing Strategy ◽  
Bilateral Cochlear Implants ◽  
Channel Interaction ◽  
Consonant Recognition ◽  
Bilateral Cochlear Implant ◽  
Input Spectrum

Objectives: The purpose of this investigation was to determine if adult bilateral cochlear implant recipients could benefit from using a speech processing strategy in which the input spectrum was interleaved among electrodes across the two implants. Design: Two separate experiments were conducted. In both experiments, subjects were tested using a control speech processing strategy and a strategy in which the full input spectrum was filtered so that only the output of half of the filters was audible to one implant, while the output of the alternative filters was audible to the other implant. The filters were interleaved in a way that created alternate frequency “holes” between the two cochlear implants. Results: In experiment one, four subjects were tested on consonant recognition. Results indicated that one of the four subjects performed better with the interleaved strategy, one subject received a binaural advantage with the interleaved strategy that they did not receive with the control strategy, and two subjects showed no decrement in performance when using the interleaved strategy. In the second experiment, 11 subjects were tested on word recognition, sentences in noise, and localization (it should be noted that not all subjects participated in all tests). Results showed that for speech perception testing one subject achieved significantly better scores with the interleaved strategy on all tests, and seven subjects showed a significant improvement with the interleaved strategy on at least one test. Only one subject showed a decrement in performance on all speech perception tests with the interleaved strategy. Out of nine subjects, one subject preferred the sound quality of the interleaved strategy. No one performed better on localization with the interleaved strategy. Conclusion: Data from this study indicate that some adult bilateral cochlear implant recipients can benefit from using a speech processing strategy in which the input spectrum is interleaved among electrodes across the two implants. It is possible that the subjects in this study who showed a significant improvement with the interleaved strategy did so because of less channel interaction; however, this hypothesis was not directly tested.

Effects of Pulse Width, Pulse Rate and Paired Electrode Stimulation on Psychophysical Measures of Dynamic Range and Speech Recognition in Cochlear Implants

2012 ◽  
Vol 33 (4) ◽  
pp. 489-496 ◽  
Author(s):  
Raymond M. Bonnet ◽  
Peter-Paul B. M. Boermans ◽  
Otto F. Avenarius ◽  
Jeroen J. Briaire ◽  
Johan H. M. Frijns
Keyword(s):  
Speech Recognition ◽  
Cochlear Implants ◽  
Pulse Rate ◽  
Pulse Width ◽  
Dynamic Range ◽  
Electrode Stimulation

Investigating the influence of pulse rate and duration on pitch perception in cochlear implants

2008 ◽  
Vol 123 (5) ◽  
pp. 3054-3054
Author(s):  
Joshua S. Stohl ◽  
Chandra S. Throckmorton ◽  
Leslie M. Collins
Keyword(s):  
Cochlear Implants ◽  
Pulse Rate ◽  
Pitch Perception

Channel interaction and speech processing strategies for cochlear implants

2000 ◽  
Vol 108 (5) ◽  
pp. 2601-2601 ◽  
Author(s):  
Ginger S. Stickney ◽  
Philip Loizou ◽  
Lakshmi Narayan Mishra ◽  
Peter F. Assmann ◽  
Robert V. Shannon ◽  
...  
Keyword(s):  
Cochlear Implants ◽  
Speech Processing ◽  
Channel Interaction ◽  
Processing Strategies
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