Facial nerve stimulation in cochlear implant users - a matter of stimulus parameters?

To describe the influence of stimulus parameters on aberrant facial nerve stimulation in cochlear implant users. Retrospective case series (three ears - two patients). Cochlear implant patients with severe facial nerve stimulation and degraded speech comprehension who underwent re-implantation with Neuro Zti EVO (Oticon Medical). In all three ears, side effects evoked by aberrant facial nerve stimulation could be resolved and thereby speech comprehension was improved. Aberrant facial nerve stimulation in cochlear implant patients was successfully resolved by re-implantation. We hypothesize that one or more of the specific stimulus paramet ers are responsible for this success: combined common ground and monopolar stimulation mode, asymmetric pulse waveform with active anodic leading first phase followed by slow capacitive discharge, and pulse width modulation for loudness coding.

Citation

Lutz Gärtner, Thomas Lenarz, Jurgita Ivanauskaite, Andreas Büchner. Facial nerve stimulation in cochlear implant users - a matter of stimulus parameters? Cochlear implants international. 2022 May;23(3):165-172

Mesh Tags

PMID: 35068356

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