Assessment of electrostimulation in children supplied with cochlear implants
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Electrically Evoked Stapedius Reflex Measurements in Cochlear Implantation and Its Application in the Postoperative Fitting Process
Published on: June 21, 2024
1Department for Hearing Speech and Voice Disorders, University of Innsbruck, Austria.
Objective:
In children supplied with cochlear implants (CIs), there is an urgent need for objective tests for the assessment of electrostimulation.
Setting:
An optimized procedure for intraoperative and post-operative applications with short duration test time, based on the measurement of the electrical farfield picked up from surface electrodes on the scalp, is presented; therefore, assessment of stimulation is independent of the stimulating electronic circuitry.
Outcome:
The setup was designed for the COMBI40 multichannel CI using a synchronized sampling technique of the amplified signals. The evaluation procedure includes examination of the time course of the signal and calculation of the input output function. With these options, a straightforward judgment of the electrical performance of the implant in situ, reflecting the input to the auditory nerve, is provided.