Journal article
Speech masking release in Hybrid cochlear implant users: Roles of spectral and temporal cues in electric-acoustic hearing
The Journal of the Acoustical Society of America, Vol.147(5), pp.3667-3683
05/2020
DOI: 10.1121/10.0001304
PMCID: PMC7255813
PMID: 32486815
Abstract
When compared with cochlear implant (CI) users utilizing electric-only (E-Only) stimulation, CI users utilizing electric-acoustic stimulation (EAS) in the implanted ear show improved speech recognition in modulated noise relative to steady-state noise (i.e., speech masking release). It has been hypothesized, but not shown, that masking release is attributed to spectral resolution and temporal fine structure (TFS) provided by acoustic hearing. To address this question, speech masking release, spectral ripple density discrimination thresholds, and fundamental frequency difference limens (f
DLs) were evaluated in the acoustic-only (A-Only), E-Only, and EAS listening modes in EAS CI users. The spectral ripple and f
DL tasks are thought to reflect access to spectral and TFS cues, which could impact speech masking release. Performance in all three measures was poorest when EAS CI users were tested using the E-Only listening mode, with significant improvements in A-Only and EAS listening modes. f
DLs, but not spectral ripple density discrimination thresholds, significantly correlated with speech masking release when assessed in the EAS listening mode. Additionally, speech masking release correlated with AzBio sentence recognition in noise. The correlation between speech masking release and f
DLs likely indicates that TFS cues provided by residual hearing were used to obtain speech masking release, which aided sentence recognition in noise.
Details
- Title: Subtitle
- Speech masking release in Hybrid cochlear implant users: Roles of spectral and temporal cues in electric-acoustic hearing
- Creators
- Viral D Tejani - Otolaryngology-Head and Neck Surgery, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, 21003 Pomerantz Family Pavilion, Iowa City, Iowa 52242-1078, USACarolyn J Brown - Communication Sciences and Disorders, Wendell Johnson Speech and Hearing Center-127B, University of Iowa, 250 Hawkins Drive, Iowa City, Iowa 52242, USA
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.147(5), pp.3667-3683
- DOI
- 10.1121/10.0001304
- PMID
- 32486815
- PMCID
- PMC7255813
- NLM abbreviation
- J Acoust Soc Am
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Publisher
- American Institute of Physics
- Grant note
- P50 DC000242 / NIDCD NIH HHS
- Language
- English
- Date published
- 05/2020
- Academic Unit
- Communication Sciences and Disorders; Otolaryngology
- Record Identifier
- 9984211769702771
Metrics
11 Record Views