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Uncovering auditory evoked potentials form cochlear implant users with independent component analysis

Viola, F.C., Thorne, J.D., Bleeck, S., Eyles, J.E. and Debener, S. (2011) Uncovering auditory evoked potentials form cochlear implant users with independent component analysis Psychophysiology, 48, (11), pp. 1470-1480. (doi:10.1111/j.1469-8986.2011.01224.x).

Record type: Article


Auditory evoked potentials (AEPs) provide an objective measure of auditory cortical function, but AEPs from cochlear implant (CI) users are contaminated by an electrical artifact. Here, we investigated the effects of electrical artifact attenuation on AEP quality. The ability of independent component analysis (ICA) in attenuating the CI artifact while preserving the AEPs was evaluated. AEPs recovered from CI users were systematically correlated with age, demonstrating that individual differences were well preserved. CI users with high-quality AEPs were characterized by a significantly shorter duration of deafness. Finally, a simulation study revealed very high spatial correlations between original and recovered normal hearing AEPs (r>.95) that were previously contaminated with CI artifacts. The results confirm that after ICA, good quality AEPs can be recovered, facilitating the objective, noninvasive study of auditory cortex function in CI users.

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e-pub ahead of print date: 2 June 2011
Published date: November 2011
Keywords: AEP, ICA, individual differences, cochlear implant, brain plasticity
Organisations: Human Sciences Group


Local EPrints ID: 334968
ISSN: 0048-5772
PURE UUID: e1078e57-038b-4569-8abb-c482d2da1634
ORCID for S. Bleeck: ORCID iD

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Date deposited: 08 Mar 2012 14:30
Last modified: 18 Jul 2017 06:11

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Author: F.C. Viola
Author: J.D. Thorne
Author: S. Bleeck ORCID iD
Author: J.E. Eyles
Author: S. Debener

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