Journal article
Acoustic Change Complex Recorded in Hybrid Cochlear Implant Users
Audiology & neurotology, Vol.28(3), pp.151-157
06/2023
DOI: 10.1159/000527671
PMCID: PMC10227181
PMID: 36450234
Abstract
INTRODUCTION Expanding cochlear implant (CI) candidacy criteria and advances in electrode arrays and soft surgical techniques have increased the number of CI recipients who have residual low-frequency hearing. Objective measures such as obligatory cortical auditory-evoked potentials (CAEPs) may help clinicians make more tailored recommendations to recipients regarding optimal listening mode. As a step toward this goal, this study investigated how CAEPs measured from hybrid CI users differ in two listening modes: acoustic alone (A-alone) versus acoustic plus electric (A + E). METHODS Eight successful hybrid CI users participated in this study. Two CAEPs, the P1-N1-P2 and the acoustic change complex (ACC), were measured simultaneously in response to the onset and change of a series of different and spectrally complex acoustic signals, in each of the two listening modes (A-alone and A + E). We examined the effects of listening mode and stimulus type on the onset and ACC N1-P2 amplitudes and peak latencies. RESULTSACC amplitudes in hybrid CI users significantly differed as a function of listening mode and stimulus type. ACC responses in A + E were larger than those in the A-alone mode. This was most evident for stimuli involving a change from low to high frequency. CONCLUSIONS Results of this study showed that the ACC varies as a function of listening mode and stimulus type. This finding suggests that the ACC can be used as a physiologic, objective measure of the benefit of hybrid CIs, potentially supporting clinicians in making clinical recommendations on individualized listening mode, or to document subjective preference for a given listening mode. Further research into this potential clinical application in a range of hybrid recipients and/or long electrode users who have residual low-frequency hearing is warranted.
Details
- Title: Subtitle
- Acoustic Change Complex Recorded in Hybrid Cochlear Implant Users
- Creators
- Eun Kyung Jeon - University of IowaBruna S Mussoi - Kent State UniversityCarolyn J Brown - University of IowaPaul J Abbas - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Audiology & neurotology, Vol.28(3), pp.151-157
- DOI
- 10.1159/000527671
- PMID
- 36450234
- PMCID
- PMC10227181
- NLM abbreviation
- Audiol Neurootol
- ISSN
- 1420-3030
- eISSN
- 1421-9700
- Language
- English
- Electronic publication date
- 11/30/2022
- Date published
- 06/2023
- Academic Unit
- Communication Sciences and Disorders; Otolaryngology
- Record Identifier
- 9984321956802771
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