ArticleLaryngoscope investigative otolaryngology2025
Neural Responsiveness to Electrical Stimulation in Children With Common Cavity Deformity.
Article in Laryngoscope investigative otolaryngology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Objectives: To investigate neural responsiveness to electrical stimulation in children with common cavity deformity (CCD) after cochlear implantation (CI), compare these responses to those in children with normal cochlea, and analyze the influence of cavity volume and electrode position on these responses. Methods: This is a case-control study. Participant included nine children with CCD and 11 children with normal cochlea. For each participant, electrically evoked compound action potentials (ECAPs) were measured, and input/output (I/O) functions were analyzed. The volume of the CCD, electrode to the fundus of the internal auditory canal (E-IAC) distance, and inner wall (E-IW) distance were measured on preoperative and postoperative imaging for children with CCD. Linear mixed-effects models (LMM) explored group differences and the influences of volume, E-IAC distance, and E-IW distance on ECAP responses for children with CCD. Results: Children with CCD exhibited significantly higher ECAP thresholds and lower amplitudes than those with normal cochlea. The E-IAC distance has a significant influence on the ECAP threshold and maximum amplitude ( Conclusion: Our findings demonstrated that there were a certain number of residual CNs in children with CCD; however, these nerves exhibited poorer responsiveness to electrical stimulation compared to children with a normal cochlea. Electrodes placed closer to the IAC fundus elicited stronger ECAP responses for children with CCD, which emphasized the importance of surgical strategies that minimize the distance between electrode contacts and residual cochlear nerve structures.
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