Uncovering auditory evoked potentials form cochlear implant users with independent component analysis
Uncovering auditory evoked potentials form cochlear implant users with independent component analysis
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.
AEP, ICA, individual differences, cochlear implant, brain plasticity
1470-1480
Viola, F.C.
df31369c-9f47-4abb-8ccd-f17ec386f9eb
Thorne, J.D.
ad09840c-84d8-4cd7-8719-b34b22c4bf34
Bleeck, S.
c888ccba-e64c-47bf-b8fa-a687e87ec16c
Eyles, J.E.
183486b3-50e3-4dc2-a4cb-ab04023cb83e
Debener, S.
d3492704-cbe9-4e67-a95e-008dd56dce99
November 2011
Viola, F.C.
df31369c-9f47-4abb-8ccd-f17ec386f9eb
Thorne, J.D.
ad09840c-84d8-4cd7-8719-b34b22c4bf34
Bleeck, S.
c888ccba-e64c-47bf-b8fa-a687e87ec16c
Eyles, J.E.
183486b3-50e3-4dc2-a4cb-ab04023cb83e
Debener, S.
d3492704-cbe9-4e67-a95e-008dd56dce99
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), .
(doi:10.1111/j.1469-8986.2011.01224.x).
Abstract
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
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Local EPrints ID: 334968
URI: http://eprints.soton.ac.uk/id/eprint/334968
ISSN: 0048-5772
PURE UUID: e1078e57-038b-4569-8abb-c482d2da1634
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Date deposited: 08 Mar 2012 14:30
Last modified: 15 Mar 2024 03:25
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Contributors
Author:
F.C. Viola
Author:
J.D. Thorne
Author:
J.E. Eyles
Author:
S. Debener
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