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A longitudinal study of the bilateral benefit in children with bilateral cochlear implants
Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Cochlear Implants M43, Karolinska University Hospital, Stockholm, Sweden.
Örebro University, School of Medical Sciences. Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden; Department of ENT-Head Neck Surgery, County Council of Östergötland, Linköping, Sweden; Swedish Institute for Disability Research, Department of Behavioural Sciences and Learning, Linköping University, Linköping, Sweden.
Department of Clinical Science, Intervention and Technology, Karolinska Institutet, Stockholm, Sweden; Department of Cochlear Implants M43, Karolinska University Hospital, Stockholm, Sweden.
Örebro University, School of Medical Sciences. Department of Clinical and Experimental Medicine, Linköping University, Linköping, Sweden; Department of ENT-Head Neck Surgery, County Council of Östergötland, Linköping, Sweden.
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2015 (English)In: International Journal of Audiology, ISSN 1499-2027, E-ISSN 1708-8186, Vol. 54, no 2, p. 77-88Article 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
Taylor & Francis, 2015. Vol. 54, no 2, p. 77-88
Keywords [en]
Bilateral cochlear implants, children, release from masking, sound localization
National Category
Otorhinolaryngology
Identifiers
URN: urn:nbn:se:oru:diva-63454DOI: 10.3109/14992027.2014.973536ISI: 000347971300003PubMedID: 25428567Scopus ID: 2-s2.0-84921297612OAI: oai:DiVA.org:oru-63454DiVA, id: diva2:1167881
Funder
The Karolinska Institutet's Research Foundation
Note

Funding agencies:

Tysta Skolan Foundation

Stockholm County Council

Karolinska University Hospital

Available from: 2017-12-19 Created: 2017-12-19 Last updated: 2018-01-16Bibliographically approved

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Mäki-Torkko, Elina

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