Impact of Frequency Mismatch and Modiolar Proximity on Speech Perception in Single-sided Deafness Patients Implanted With Perimodiolar Cochlear Electrodes
Abstract
INTRODUCTION: This study evaluated the impact of frequency mismatch and electrode proximity to the modiolus on speech perception in patients with single-sided deafness (SSD) implanted with perimodiolar electrodes (PMEs). We aimed to determine whether frequency mismatch or electrode positioning more strongly predicts speech outcomes, and whether these associations change over time. METHODS: A retrospective cohort of 34 SSD patients implanted at the Royal Victorian Eye and Ear Hospital between 2014 and 2022 was analyzed. Frequency mismatch was calculated using the Stakhovskaya spiral ganglion map, and electrode proximity was measured from postoperative CT. Speech perception was assessed with consonant-nucleus-consonant phoneme (CNCP) scores and adaptive speech-in-noise testing (SRT) at 3 and 12 months. Five nonusers (
Fields of Study & Subjects
Hearing Loss and Rehabilitation
Ear Surgery and Otitis Media
Hearing
Cochlea
Tinnitus
Genetics
Publication details
- Journal / source
- Otology & Neurotology
- Publisher
- Ovid Technologies (Wolters Kluwer Health)
- Volume
- 47
- Issue
- 5
- Pages
- 668–677
- Publication date
- 23 February 2026
- Language
- EN