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

scholarly journals The Benefits of Using RONDO and an In-the-Ear Hearing Aid in Patients Using a Combined Electric-Acoustic System

2015 ◽  
Vol 2015 ◽  
pp. 1-4 ◽  
Author(s):  
Dayse Távora-Vieira ◽  
Stuart Miller
Keyword(s):  
Single Unit ◽  
Hearing Aid ◽  
Control Unit ◽  
Acoustic Stimulation ◽  
Profound Hearing Loss ◽  
Low Frequencies ◽  
Speech Processor ◽  
High Frequencies ◽  
Acoustic Hearing ◽  
Electric Acoustic Stimulation

People with residual hearing in the low frequencies and profound hearing loss in the high frequencies often do not benefit from acoustic amplification. Focus on this group of patients led to the development of the combined electric-acoustic stimulation (EAS) systems which can provide users with greater speech perception than can cochlear implant (CI) alone or acoustic hearing alone. EAS users wear a combined speech processor that incorporates a behind-the-ear audio processor that sits with an ear hook on the user’s pinna and a hearing aid, which sits in the ear canal. However, with the introduction of single-unit processors, which combine the audio processor, coil, control unit, and battery pack into a single device that sits on the implant site, therefore off the ear, simultaneous electric (CI) and acoustic (hearing aid) stimulation is not currently possible with a combined processor. To achieve EAS with a single-unit processor, a CI user must also wear a hearing aid. This study seeks to determine if experienced users of combined EAS speech processors could also benefit from using a combination of a single-unit speech processor that sits off the ear and an in-the-ear hearing aid.

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.

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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