Universität zu Köln

Weglage, Anna ORCID: 0000-0002-4824-3293, Layer, Natalie, Radecke, Jan‐Ole, Meister, Hartmut, Müller, Verena, Lang‐Roth, Ruth, Walger, Martin and Sandmann, Pascale (2025). Reduced Visual‐Cortex Reorganization Before and After Cochlear Implantation Relates to Better Speech Recognition Ability. Journal of Neuroscience Research, 103 (5). pp. 1-17. Wiley. ISSN 0360-4012

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Abstract

[Artikel-Nr.: e70042] Although a cochlear implant (CI) can partially restore auditory function, CI recipients show alterations not only in auditory but also in visual cortical processing. Yet, it is not well understood how these visual changes relate to the CI outcome and to what extent these changes are induced by auditory deprivation and the limited CI input, respectively. Here, we present a prospective longitu- dinal electroencephalography study which examined the deprivation- and CI-induced alterations on cortical face processing by comparing visual evoked potentials (VEP) in CI users before and 6 months after implantation. A group of normal-hearing (NH) lis- teners served as a control. The participants performed a word-identification task and a face-categorization task to study the cortical processing of static and articulating faces in attended and unattended conditions. The CI candidates and CI users showed a reduced visual-cortex activation, a stronger functional connectivity between the visual and auditory cortex, and a reduced attention effect in the (extended) alpha frequency range (8–18 Hz) when compared to NH listeners. There was a positive correlation between the P1 VEP amplitude recorded before implantation and the speech recognition ability after implantation. Our results suggest that the CI users' alterations in cortical face processing are mainly induced by auditory deprivation and not by CI experience. Importantly, these deprivation-induced changes seem to be related to the CI outcome. Our results suggest that the visual P1 amplitude as re- corded before implantation provides an objective index of cortical visual reorganization that may help predict the CI outcome.

Item Type:	Article
Creators:	Creators Email ORCID ORCID Put Code Weglage, Anna UNSPECIFIED https://orcid.org/0000-0002-4824-3293 UNSPECIFIED Layer, Natalie UNSPECIFIED UNSPECIFIED UNSPECIFIED Radecke, Jan‐Ole UNSPECIFIED UNSPECIFIED UNSPECIFIED Meister, Hartmut UNSPECIFIED UNSPECIFIED UNSPECIFIED Müller, Verena UNSPECIFIED UNSPECIFIED UNSPECIFIED Lang‐Roth, Ruth UNSPECIFIED UNSPECIFIED UNSPECIFIED Walger, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED Sandmann, Pascale UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-806726
Identification Number:	10.1002/jnr.70042
Journal or Publication Title:	Journal of Neuroscience Research
Volume:	103
Number:	5
Page Range:	pp. 1-17
Number of Pages:	17
Date:	8 May 2025
Publisher:	Wiley
ISSN:	0360-4012
Language:	English
Faculty:	External institution Faculty of Medicine
Divisions:	Externe Einrichtungen > An-Institute > An-Institute der Medizinischen Fakultät > Jean-Uhrmacher-Institut Faculty of Medicine > Hals-Nasen-Ohrenheilkunde > Klinik und Poliklinik für Hals-, Nasen- und Ohrenheilkunde
Subjects:	Medical sciences Medicine
Uncontrolled Keywords:	Keywords Language allocation of attention ; alpha power ; cortical reorganization ; visual face processing English
['eprint_fieldname_oa_funders' not defined]:	Publikationsfonds UzK
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/80672