Universität zu Köln

Finke, Mareike, Sandmann, Pascale, Boenitz, Hanna, Kral, Andrej ORCID: 0000-0002-7762-4642 and Buechner, Andreas (2016). Consequences of Stimulus Type on Higher-Order Processing in Single-Sided Deaf Cochlear Implant Users. Audiol. Neuro-Otol., 21 (5). S. 305 - 316. BASEL: KARGER. ISSN 1421-9700

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Abstract

Single-sided deaf subjects with a cochlear implant (CI) provide the unique opportunity to compare central auditory processing of the electrical input (CI ear) and the acoustic input (normal-hearing, NH, ear) within the same individual. In these individuals, sensory processing differs between their two ears, while cognitive abilities are the same irrespectively of the sensory input. To better understand perceptualcognitive factors modulating speech intelligibility with a CI, this electroencephalography study examined the centralauditory processing of words, the cognitive abilities, and the speech intelligibility in 10 postlingually single-sided deaf CI users. We found lower hit rates and prolonged response times for word classification during an oddball task for the CI ear when compared with the NH ear. Also, event-related potentials reflecting sensory (N1) and higher-order processing (N2/N4) were prolonged for word classification (targets versus nontargets) with the CI ear compared with the NH ear. Our results suggest that speech processing via the CI ear and the NH ear differs both at sensory (N1) and cognitive (N2/N4) processing stages, thereby affecting the behavioral performance for speech discrimination. These results provide objective evidence for cognition to be a key factor for speech perception under adverse listening conditions, such as the degraded speech signal provided from the CI. (C) 2016 S. Karger AG, Basel

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Finke, Mareike UNSPECIFIED UNSPECIFIED UNSPECIFIED Sandmann, Pascale UNSPECIFIED UNSPECIFIED UNSPECIFIED Boenitz, Hanna UNSPECIFIED UNSPECIFIED UNSPECIFIED Kral, Andrej UNSPECIFIED orcid.org/0000-0002-7762-4642 UNSPECIFIED Buechner, Andreas UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-288150
DOI:	10.1159/000452123
Journal or Publication Title:	Audiol. Neuro-Otol.
Volume:	21
Number:	5
Page Range:	S. 305 - 316
Date:	2016
Publisher:	KARGER
Place of Publication:	BASEL
ISSN:	1421-9700
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language AUDITORY-EVOKED POTENTIALS; SENSORINEURAL HEARING-LOSS; UNILATERAL DEAFNESS; SPEECH RECOGNITION; SOUND LOCALIZATION; TINNITUS; MEMORY; ADULTS; PERCEPTION; CORTEX Multiple languages Audiology & Speech-Language Pathology; Neurosciences; Otorhinolaryngology Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/28815