Journal article

Long-Term Asymmetric Hearing Affects Cochlear Implantation Outcomes Differently in Adults with Pre- and Postlingual Hearing Loss

Isabelle Boisvert, Catherine M McMahon, Richard C Dowell, Bjorn Lyxell



In many countries, a single cochlear implant is offered as a treatment for a bilateral hearing loss. In cases where there is asymmetry in the amount of sound deprivation between the ears, there is a dilemma in choosing which ear should be implanted. In many clinics, the choice of ear has been guided by an assumption that the reorganisation of the auditory pathways caused by longer duration of deafness in one ear is associated with poorer implantation outcomes for that ear. This assumption, however, is mainly derived from studies of early childhood deafness. This study compared outcomes following implantation of the better or poorer ear in cases of long-term hearing asymmetries. Audiological ..

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Funding Acknowledgements

This work was funded by the Macquarie University Research Excellence Scheme ( (IB), the HEARing CRC, established and supported under the Cooperative Research Centres Program - Business Australia ( (IB RD CM) and the Linnaeus Centre HEAD, The Swedish Institute for Disability Research ( (BL, IB). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.