Cortical auditory evoked potentials as an objective measure of behavioral thresholds in cochlear implant users.
Abstract
The aim of this study was to assess the suitability of using cortical auditory evoked potentials (CAEPs) as an objective tool for predicting behavioral hearing thresholds in cochlear implant (CI) users. Nine experienced adult CI users of Cochlear(™) devices participated. Behavioral thresholds were measured in CI users across apical, mid and basal electrodes. CAEPs were measured for the same stimuli (50 ms pulse trains of 900-pps rate) at a range of input levels across the individual's psychophysical dynamic range (DR). Amplitude growth functions using global field power (GFP) were plotted, and from this the CAEP thresholds were extrapolated and compared to the behavioral thresholds. Increased amplitude and decreased latency of the N1-P2 response was seen with increasing input level. A strong correlation was found between CAEP and behavioral thresholds (r = 0.93), implying that the cortical response may be more useful as an objective programming tool for cochlear implants than the auditory nerve response.
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Other measures like ECAP, EABR, and CAEPs have been studied to automatically fit cochlear implants, but none of them reached a clinical application.
“Other measures like ECAP (McKay et al., 2013), electrically evocated auditory brainstem response (EABR) (Guenser et al., 2015), cortical auditory evoked potentials (CAEPs) (Visram et al., 2015) have been studied to automatically fit cochlear implants, but none of them reached a clinical application.”
From Toward a personalized closed-loop stimulation of the visual cortex: Advances and challenges (2022) · cites this paper as Visram et al., 2015
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- Authors
- Visram, A. S., Innes-Brown, H., El-Deredy, W., & McKay, C. M.
- Affiliations
- Betsi Cadwaladr University Health Board (GB)
- Bionics Institute (AU)
- Corresponding author
- McKay, Colette M.
- Venue
- Hearing Research
- Publisher
- Elsevier BV
- Published
- 2015-09
- Volume
- 327
- Pages
- 35-42
- ISSN
- 0378-5955 (ISSN-L)
- OpenAlex
- W295128937
- Cited by
- 54
- References
- 26
- Citations by year
- 2026: 4 · 2025: 9 · 2024: 7 · 2023: 4 · 2022: 4 · 2021: 10 · 2020: 2 · 2019: 5 · 2018: 2 · 2017: 4 · 2016: 3
- FWCI
- 1.80
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Hearing Research (publishedVersion)
- PubMed (publishedVersion)
- Research Explorer (The University of Manchester) (submittedVersion)
- Funders
- Betsi Cadwaladr University Health Board
- University of Manchester and Cochlear
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Hearing Loss and Rehabilitation
- Life Sciences › Neuroscience › Sensory Systems › Hearing, Cochlea, Tinnitus, Genetics
- Social Sciences › Psychology › Developmental and Educational Psychology › Hearing Impairment and Communication
- Keywords
- cortical auditory evoked potentials, cochlear implants, behavioral hearing thresholds, global field power, amplitude growth function, cochlear implant programming, pulse trains
- MeSH terms
- Acoustic Stimulation, Adult, Aged, Aged, 80 and over, Auditory Cortex, Auditory Threshold, Cochlear Implants, Cochlear Nerve, Electric Stimulation, Electroencephalography, Evoked Potentials, Auditory, Female, Humans, Male, Middle Aged, Psychoacoustics, Reaction Time, Time Factors, Cochlear Implantation, Persons With Hearing Impairments, Persons with Hearing Disabilities
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