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Updated: May 7, 2026
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Cochlear Implant Surgery and Electrically-evoked Auditory Brainstem Response Recordings in C57BL/6 Mice
Published on: January 9, 2019
Cochlear implantation for chronic electrical stimulation in the mouse.
S Irving1, M I Trotter, J B Fallon
1Bionics Institute, Melbourne, Australia; Department of Psychology, University of Melbourne, Australia.
Hearing Research
|September 24, 2013
Summary
Researchers developed a new, implantable device for cochlear electrical stimulation in mice. This breakthrough enables advanced auditory research using genetic deafness models, advancing hearing loss studies.
Area of Science:
- Auditory Neuroscience
- Medical Engineering
- Genetics
Background:
- Mice are valuable models for auditory research due to numerous genetic deafness models.
- Congenital hearing impairment models in mice offer significant clinical relevance.
- Previous limitations in mouse cochlear implant research included a lack of suitable devices and surgical challenges.
Purpose of the Study:
- To develop and present a fully-implantable intracochlear electrode stimulator assembly for chronic implantation in mice.
- To describe the surgical approach for implanting the device in the mouse cochlea.
- To present initial functional data from intracochlear electrical stimulation in mice.
Main Methods:
- Design and fabrication of a miniaturized intracochlear electrode array and stimulator.
- Development of a surgical protocol for chronic implantation in the mouse.
- Electrophysiological recordings to assess functional outcomes of electrical stimulation.
Main Results:
- Successful chronic implantation of the intracochlear electrode stimulator assembly in mice.
- Demonstration of functional intracochlear electrical stimulation in the mouse model.
- Establishment of a novel platform for auditory research in genetically modified mice.
Conclusions:
- The developed device and surgical technique overcome previous limitations for cochlear implant research in mice.
- This advancement facilitates the study of hearing impairment using genetically defined mouse models.
- The findings open new avenues for investigating auditory function and therapeutic strategies in hearing loss.
