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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
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Visual Reliance During Speech Recognition in Cochlear Implant Users and Candidates
Aaron C Moberly1, Kara J Vasil1, Christin Ray1
1Department of Otolaryngology - Head & Neck Surgery, The Ohio State University, Columbus, OH.
Journal of the American Academy of Audiology
|June 19, 2019
Summary
Adults with cochlear implants (CIs) may rely more on visual cues for speech recognition, especially with poor auditory function. This visual reliance doesn't necessarily decrease after CI use, suggesting personalized strategies for hearing loss communication.
Area of Science:
- Audiology
- Speech-Language Pathology
- Neuroscience
Background:
- Adults with cochlear implants (CIs) are often thought to depend more on visual cues for speech recognition.
- The interplay between auditory and visual reliance in audiovisual (AV) speech recognition is not fully understood and may be influenced by factors like hearing loss (HL) duration and age.
Purpose of the Study:
- To investigate if visual reliance during AV speech recognition is dependent on auditory function in adult CI candidates (CICs) and experienced CI users (ECIs).
Main Methods:
- 44 ECIs and 23 CICs completed sentence recognition tests in auditory-only, visual-only, and AV conditions.
- Calculated visual enhancement (VE) and auditory enhancement (AE) to quantify benefits of adding visual or auditory information.
- Computed a VE/AE ratio to assess relative reliance on visual versus auditory cues.
Main Results:
- The visual enhancement to auditory enhancement (VE/AE) ratio was inversely predicted by auditory-only (A-only) performance.
- No significant differences in visual reliance were found between ECIs and CICs.
- Neither duration of hearing loss nor age explained additional variance in the VE/AE ratio.
Conclusions:
- Poor auditory performance in both ECIs and CICs may drive a shift towards visual reliance.
- Cochlear implantation does not guarantee a return to auditory reliance.
- Listeners with hearing loss exhibit varying degrees of reliance on both auditory and visual information to optimize communication based on individual performance and experience.
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