Perimodiolar Electrode Locations Outperform Lateral Wall Arrays When Controlling for Cochlear Health and Speech Processing Strategy

Electrode position within the ST varies considerably, even within the same electrode design; perimodiolar arrays may lie along the lateral wall if over inserted, whereas lateral wall arrays may approach the modiolus depending on cochlear morphology. Incorporating electrode location and cochlear health into predictive models is essential for understanding performance differences between array types. When controlling for ECochG-TR, WF, AID, and programming strategy, perimodiolar electrodes with tighter modiolar proximity outperform lateral wall electrodes at 6 months, emphasizing the importance of these factors in optimizing CI outcomes.