Universität zu Köln

Radecke, Jan-Ole ORCID: 0000-0003-2115-9603, Schierholz, Irina, Kral, Andrej ORCID: 0000-0002-7762-4642, Lenarz, Thomas, Murray, Micah M. and Sandmann, Pascale (2022). Distinct multisensory perceptual processes guide enhanced auditory recognition memory in older cochlear implant users. NeuroImage-Clin., 33. OXFORD: ELSEVIER SCI LTD. ISSN 2213-1582

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Abstract

In naturalistic situations, sounds are often perceived in conjunction with matching visual impressions. For example, we see and hear the neighbor's dog barking in the garden. Still, there is a good chance that we recognize the neighbor's dog even when we only hear it barking, but do not see it behind the fence. Previous studies with normal-hearing (NH) listeners have shown that the audio-visual presentation of a perceptual object (like an animal) increases the probability to recognize this object later on, even if the repeated presentation of this object occurs in a purely auditory condition. In patients with a cochlear implant (CI), however, the electrical hearing of sounds is impoverished, and the ability to recognize perceptual objects in auditory conditions is significantly limited. It is currently not well understood whether CI users - as NH listeners - show a multisensory facilitation for auditory recognition. The present study used event-related potentials (ERPs) and a continuous recognition paradigm with auditory and audio-visual stimuli to test the prediction that CI users show a benefit from audiovisual perception. Indeed, the congruent audio-visual context resulted in an improved recognition ability of objects in an auditory-only condition, both in the NH listeners and the CI users. The ERPs revealed a groupspecific pattern of voltage topographies and correlations between these ERP maps and the auditory recognition ability, indicating a different processing of congruent audio-visual stimuli in CI users when compared to NH listeners. Taken together, our results point to distinct cortical processing of naturalistic audio-visual objects in CI users and NH listeners, which however allows both groups to improve the recognition ability of these objects in a purely auditory context. Our findings are of relevance for future clinical research since audio-visual perception might also improve the auditory rehabilitation after cochlear implantation.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Radecke, Jan-Ole UNSPECIFIED orcid.org/0000-0003-2115-9603 UNSPECIFIED Schierholz, Irina UNSPECIFIED UNSPECIFIED UNSPECIFIED Kral, Andrej UNSPECIFIED orcid.org/0000-0002-7762-4642 UNSPECIFIED Lenarz, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Murray, Micah M. UNSPECIFIED UNSPECIFIED UNSPECIFIED Sandmann, Pascale UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-688528
DOI:	10.1016/j.nicl.2022.102942
Journal or Publication Title:	NeuroImage-Clin.
Volume:	33
Date:	2022
Publisher:	ELSEVIER SCI LTD
Place of Publication:	OXFORD
ISSN:	2213-1582
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language EVENT-RELATED POTENTIALS; CROSS-MODAL PLASTICITY; EVOKED-POTENTIALS; SPEECH-PERCEPTION; DEAF PATIENTS; COMPONENT; CONFLICT; CORTEX; INTEGRATION; BRAIN Multiple languages Neuroimaging Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/68852