scholarly journals Sensitivity to interaural time differences and localization accuracy in cochlear implant users with combined electric-acoustic stimulation

PLoS ONE ◽  
2020 ◽  
Vol 15 (10) ◽  
pp. e0241015
Author(s):  
Monika Körtje ◽  
Uwe Baumann ◽  
Timo Stöver ◽  
Tobias Weissgerber
Keyword(s):  
Cochlear Implant ◽  
Acoustic Stimulation ◽  
Interaural Time Differences ◽  
Localization Accuracy ◽  
Electric Acoustic Stimulation

scholarly journals Reducing the Device Delay Mismatch Can Improve Sound Localization in Bimodal Cochlear Implant/Hearing-Aid Users

2019 ◽  
Vol 23 ◽  
pp. 233121651984387 ◽  
Author(s):  
Stefan Zirn ◽  
Julian Angermeier ◽  
Susan Arndt ◽  
Antje Aschendorff ◽  
Thomas Wesarg
Keyword(s):  
Cochlear Implant ◽  
Sound Localization ◽  
Delay Line ◽  
Hearing Aid ◽  
Interaural Time Differences ◽  
Localization Accuracy ◽  
Everyday Situation ◽  
Acclimatization Period ◽  
Study Participants ◽  
Line P

In users of a cochlear implant (CI) together with a contralateral hearing aid (HA), so-called bimodal listeners, differences in processing latencies between digital HA and CI up to 9 ms constantly superimpose interaural time differences. In the present study, the effect of this device delay mismatch on sound localization accuracy was investigated. For this purpose, localization accuracy in the frontal horizontal plane was measured with the original and minimized device delay mismatch. The reduction was achieved by delaying the CI stimulation according to the delay of the individually worn HA. For this, a portable, programmable, battery-powered delay line based on a ring buffer running on a microcontroller was designed and assembled. After an acclimatization period to the delayed CI stimulation of 1 hr, the nine bimodal study participants showed a highly significant improvement in localization accuracy of 11.6% compared with the everyday situation without the delay line ( p < .01). Concluding, delaying CI stimulation to minimize the device delay mismatch seems to be a promising method to increase sound localization accuracy in bimodal listeners.

scholarly journals Sensitivity to Interaural Time Differences with Combined Cochlear Implant and Acoustic Stimulation

2008 ◽  
Vol 10 (1) ◽  
pp. 131-141 ◽  
Author(s):  
Tom Francart ◽  
Jan Brokx ◽  
Jan Wouters
Keyword(s):  
Cochlear Implant ◽  
Acoustic Stimulation ◽  
Interaural Time Differences

scholarly journals Hearing Preservation in Cochlear Implant Surgery

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Priscila Carvalho Miranda ◽  
André Luiz Lopes Sampaio ◽  
Rafaela Aquino Fernandes Lopes ◽  
Alessandra Ramos Venosa ◽  
Carlos Augusto Costa Pires de Oliveira
Keyword(s):  
Cochlear Implant ◽  
Cochlear Implantation ◽  
Surgical Techniques ◽  
Low Frequency ◽  
Hearing Preservation ◽  
Acoustic Stimulation ◽  
Electrode Design ◽  
High Frequency Region ◽  
Electric Acoustic Stimulation ◽  
New Treatment

In the past, it was thought that hearing loss patients with residual low-frequency hearing would not be good candidates for cochlear implantation since insertion was expected to induce inner ear trauma. Recent advances in electrode design and surgical techniques have made the preservation of residual low-frequency hearing achievable and desirable. The importance of preserving residual low-frequency hearing cannot be underestimated in light of the added benefit of hearing in noisy atmospheres and in music quality. The concept of electrical and acoustic stimulation involves electrically stimulating the nonfunctional, high-frequency region of the cochlea with a cochlear implant and applying a hearing aid in the low-frequency range. The principle of preserving low-frequency hearing by a “soft surgery” cochlear implantation could also be useful to the population of children who might profit from regenerative hair cell therapy in the future. Main aspects of low-frequency hearing preservation surgery are discussed in this review: its brief history, electrode design, principles and advantages of electric-acoustic stimulation, surgical technique, and further implications of this new treatment possibility for hearing impaired patients.

Residual Hair Cell Responses in Electric-Acoustic Stimulation Cochlear Implant Users with Complete Loss of Acoustic Hearing After Implantation

2021 ◽  
Vol 22 (2) ◽  
pp. 161-176
Author(s):  
Viral D. Tejani ◽  
Jeong-Seo Kim ◽  
Jacob J. Oleson ◽  
Paul J. Abbas ◽  
Carolyn J. Brown ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Hair Cell ◽  
Acoustic Stimulation ◽  
Complete Loss ◽  
Cell Responses ◽  
Acoustic Hearing ◽  
Electric Acoustic Stimulation

Cochlear Implant-Based Electric-Acoustic Stimulation Modulates Neural Stem Cell-Derived Neural Regeneration

2021 ◽  
Author(s):  
Rongrong Guo ◽  
Menghui Liao ◽  
Xiaofeng Ma ◽  
Yangnan Hu ◽  
Xiaoyun Qian ◽  
...  
Keyword(s):  
Stem Cell ◽  
Cochlear Implant ◽  
Neural Stem Cell ◽  
Acoustic Stimulation ◽  
Neural Regeneration ◽  
Electric Acoustic Stimulation

Development and Application of Cochlear Implant-Based Electric-Acoustic Stimulation of Spiral Ganglion Neurons

2019 ◽  
Vol 5 (12) ◽  
pp. 6735-6741 ◽  
Author(s):  
Rongrong Guo ◽  
Xiaofeng Ma ◽  
Menghui Liao ◽  
Yun Liu ◽  
Yangnan Hu ◽  
...  
Keyword(s):  
Cochlear Implant ◽  
Spiral Ganglion ◽  
Acoustic Stimulation ◽  
Spiral Ganglion Neurons ◽  
Electric Acoustic Stimulation ◽  
Ganglion Neurons ◽  
Stimulation Of

Development and Evaluation of an Improved Cochlear Implant Electrode Design for Electric Acoustic Stimulation

2004 ◽  
Vol 114 (7) ◽  
pp. 1237-1241 ◽  
Author(s):  
Oliver Adunka ◽  
Jan Kiefer ◽  
Marc H. Unkelbach ◽  
Thomas Lehnert ◽  
Wolfgang Gstoettner
Keyword(s):  
Cochlear Implant ◽  
Acoustic Stimulation ◽  
Electrode Design ◽  
Electric Acoustic Stimulation

Cochlear implant-based electric-acoustic stimulation modulates neural stem cell-derived neural regeneration

2021 ◽  
Author(s):  
Rongrong Guo ◽  
Menghui Liao ◽  
Xiaofeng Ma ◽  
Yangnan Hu ◽  
Xiaoyun Qian ◽  
...  
Keyword(s):  
Stem Cell ◽  
Cochlear Implant ◽  
Neural Stem Cell ◽  
High Frequency ◽  
Low Frequency ◽  
Acoustic Stimulation ◽  
Neural Regeneration ◽  
Low Frequency Stimulation ◽  
Electric Acoustic Stimulation ◽  
Frequency Stimulation

A cochlear implant based device was designed to stimulate NSCs. It is found that electric-acoustic stimulation with high frequency induced NSCs death but low-frequency stimulation promoted NSCs to proliferate and differentiate into neurons.

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