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Updated: Feb 22, 2026

Sound Source Localization Testing in Single-sided Deafness Following Bone Conduction Intervention
Published on: December 20, 2024
Localization performance correlates with binaural fusion for interaurally mismatched vocoded speech
Deepa Suneel1, Hannah Staisloff1, Corey S Shayman1
1Speech and Hearing Science Department, University of Illinois at Urbana-Champaign, 901 South 6th Street, Champaign, Illinois 61820, USA dsuneel93@gmail.com, staislo2@illinois.edu, shayman@ohsu.edu, stelmac2@illinois.edu, jaronoff@illinois.edu.
Abstract:
Bilateral cochlear implant users often have difficulty fusing sounds from the two ears into a single percept. However, measuring fusion can be difficult, particularly with cochlear implant users who may have no reference for a fully fused percept. As a first step to address this, this study examined how localization performance of normal hearing subjects relates to binaural fusion. The stimuli were vocoded speech tokens with various interaural mismatches. The results reveal that the percentage of stimuli perceived as fused was correlated with localization performance, suggesting that changes in localization performance can serve as an indicator for binaural fusion changes.
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