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A longitudinal study of the bilateral benefit in children with bilateral cochlear implants
Karolinska Institute, Sweden; Karolinska University Hospital, Sweden.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Department of Otorhinolaryngology in Linköping.
Karolinska Institute, Sweden; Karolinska University Hospital, Sweden.
Linköping University, Department of Clinical and Experimental Medicine, Division of Neuro and Inflammation Science. Linköping University, Faculty of Medicine and Health Sciences. Region Östergötland, Anaesthetics, Operations and Specialty Surgery Center, Department of Otorhinolaryngology in Linköping.
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2015 (English)In: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 54, no 2, 77-88 p.Article in journal (Refereed) Published
Abstract [en]

Objective: To study the development of the bilateral benefit in children using bilateral cochlear implants by measurements of speech recognition and sound localization. Design: Bilateral and unilateral speech recognition in quiet, in multi-source noise, and horizontal sound localization was measured at three occasions during a two-year period, without controlling for age or implant experience. Longitudinal and cross-sectional analyses were performed. Results were compared to cross-sectional data from children with normal hearing. Study sample: Seventy-eight children aged 5.1-11.9 years, with a mean bilateral cochlear implant experience of 3.3 years and a mean age of 7.8 years, at inclusion in the study. Thirty children with normal hearing aged 4.8-9.0 years provided normative data. Results: For children with cochlear implants, bilateral and unilateral speech recognition in quiet was comparable whereas a bilateral benefit for speech recognition in noise and sound localization was found at all three test occasions. Absolute performance was lower than in children with normal hearing. Early bilateral implantation facilitated sound localization. Conclusions: A bilateral benefit for speech recognition in noise and sound localization continues to exist over time for children with bilateral cochlear implants, but no relative improvement is found after three years of bilateral cochlear implant experience.

Place, publisher, year, edition, pages
Informa Healthcare , 2015. Vol. 54, no 2, 77-88 p.
Keyword [en]
Bilateral cochlear implants; children; release from masking; sound localization
National Category
Otorhinolaryngology
Identifiers
URN: urn:nbn:se:liu:diva-114231DOI: 10.3109/14992027.2014.973536ISI: 000347971300003PubMedID: 25428567OAI: oai:DiVA.org:liu-114231DiVA: diva2:788759
Note

Funding Agencies|Tysta Skolan Foundation; Stockholm County Council; Karolinska Institutet; Karolinska University Hospital

Available from: 2015-02-16 Created: 2015-02-16 Last updated: 2017-12-04

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Mäki-Torkko, ElinaHarder, HenrikHergils, LeifStenfelt, Stefan

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Mäki-Torkko, ElinaHarder, HenrikHergils, LeifStenfelt, Stefan
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Division of Neuro and Inflammation ScienceFaculty of Medicine and Health SciencesDepartment of Otorhinolaryngology in Linköping
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International Journal of Audiology
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