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Bilateral versus unilateral cochlear implants in children: Speech recognition, sound localization, and parental reports
Karolinska University Hospital, Sweden Karolinska Institute, Sweden .
Linköping University, Department of Clinical and Experimental Medicine, Technical Audiology. Linköping University, Faculty of Health Sciences.
Karolinska University Hospital, Sweden Karolinska Institute, Sweden .
Linköping University, Department of Clinical and Experimental Medicine, Oto-Rhiono-Laryngology and Head & Neck Surgery. Linköping University, Faculty of Health Sciences. Östergötlands Läns Landsting, Sinnescentrum, Department of ENT - Head and Neck Surgery UHL.
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2012 (English)In: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 51, no 11, 817-832 p.Article in journal (Refereed) Published
Abstract [en]

Objective: To compare bilateral and unilateral speech recognition in quiet and in multi-source noise, and horizontal sound localization of low and high frequency sounds in children with bilateral cochlear implants. Design: Bilateral performance was compared to performance of the implanted side with the best monaural speech recognition in quiet result. Parental reports were collected in a questionnaire. Results from the CI children were compared to binaural and monaural performance of normal-hearing peers. Study sample: Sixty-four children aged 5.1-11.9 years who were daily users of bilateral cochlear implants. Thirty normal-hearing children aged 4.8-9.0 years were recruited as controls. Results and Conclusions : Group data showed a statistically significant bilateral speech recognition and sound localization benefit, both behaviorally and in parental reports. The bilateral speech recognition benefit was smaller in quiet than in noise. The majority of subjects localized high and low frequency sounds significantly better than chance using bilateral implants, while localization accuracy was close to chance using unilateral implants. Binaural normal-hearing performance was better than bilateral performance in implanted children across tests, while bilaterally implanted children showed better localization than normal-hearing children under acute monaural conditions.

Place, publisher, year, edition, pages
Informa Healthcare , 2012. Vol. 51, no 11, 817-832 p.
Keyword [en]
Bilateral cochlear implants, children, release from masking, sound localization, parental reports
National Category
Medical and Health Sciences
Identifiers
URN: urn:nbn:se:liu:diva-85292DOI: 10.3109/14992027.2012.705898ISI: 000309746600004OAI: oai:DiVA.org:liu-85292DiVA: diva2:570301
Note

Funding Agencies|ALF grants from Stockholm City Council||

Available from: 2012-11-19 Created: 2012-11-15 Last updated: 2017-12-07

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Mäki-Torkko, ElinaHarder, HenrikHergils, LeifStenfelt, Stefan

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Mäki-Torkko, ElinaHarder, HenrikHergils, LeifStenfelt, Stefan
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Technical AudiologyFaculty of Health SciencesOto-Rhiono-Laryngology and Head & Neck SurgeryDepartment of ENT - Head and Neck Surgery UHLHealth Technology Assessment
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International Journal of Audiology
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