Abstract
Neural correlates of speech in noise perception differences between combined electric-acoustic stimulation and standard cochlear implants
The Journal of the Acoustical Society of America, Vol.151(4), pp.A278-A278
04/2022
DOI: 10.1121/10.0011332
Abstract
Cochlear implants have evolved to utilize residual acoustic hearing that combines to electric stimulation, known as electric-acoustic stimulation (EAS). However, there are mixed expectations about the benefits of EAS. A positive perspective expects that contributions from residual hearing provide better access to acoustic cues that is helpful for speech-in-noise perception. An opposing view concerns potentially poorer spectral resolution of EAS electrodes’ stimulation as those electrodes are often inserted close to lateral wall, which may cause poorer speech-in-noise perception. This study aimed to directly compare neural processes of speech-in-noise perception between EAS and standard CI users to provide an answer to the above alternative expectations. We used 64-channel EEG to measure cortical evoked responses to (1) background noise and (2) target word while listeners perform a word-in-noise task. Then, we compared the amplitude ratio of evoked responses to the target word and background noise, referred to as “internal SNR,” which reflects how well target sound is unmasked from the mixture of speech and noise. Based on the comparison of 55 EAS and 22 standard CI users, internal SNR was significantly larger in EAS CI users. This result indicates that EAS provides enhanced neural processes for speech unmasking.
Details
- Title: Subtitle
- Neural correlates of speech in noise perception differences between combined electric-acoustic stimulation and standard cochlear implants
- Creators
- Jean Hong - University of IowaHwan Shim - University of IowaSubong Kim - Purdue University West LafayetteMarlan HansenBruce Gantz - University of IowaInyong Choi - University of Iowa
- Resource Type
- Abstract
- Publication Details
- The Journal of the Acoustical Society of America, Vol.151(4), pp.A278-A278
- DOI
- 10.1121/10.0011332
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Number of pages
- 1
- Date published
- 04/2022
- Academic Unit
- Communication Sciences and Disorders; Molecular Physiology and Biophysics; Iowa Neuroscience Institute; Neurosurgery; Otolaryngology
- Record Identifier
- 9984267565602771
Metrics
68 Record Views