MedicalResearch.com Interview with:
Margaret T. Dillon, AuD
University of North Carolina School of MedicineMedical Research: What is the background for this study? What are the main findings?Dr. Dillon: The goal of this study was to evaluate whether age at revision cochlear implantation influences post-revision speech perception performance. A cochlear implant is an implantable auditory prosthesis that aims to provide sound to patients with certain degrees of hearing loss, by converting and transmitting the acoustic sound into electric stimulation. Research has shown cochlear implant recipients experience improved speech perception in quiet and noise as compared to preoperative performance with conventional amplification (ie, hearing aids). There is variability in postoperative performance. Understanding the cause or causes of this variability is the primary goal of a number of research studies. One suspected indicator for this variability is advanced age at the time of surgery.
Though the incidence of revision cochlear implantation is low, it may be warranted when the internal device is no longer functional or not functioning optimally. We reviewed the pre-revision and post-revision speech perception performance of younger (< 65 years of age) and older (> 65 years of age) adult cochlear implant recipients. There was no difference between the post-revision speech perception performance between the two groups.
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MedicalResearch.com Interview with: William Kronenberger, Ph.D., HSPP
Professor and Director, Section of Psychology
Acting Vice Chair of Administration
Department of Psychiatry
Indiana University School of Medicine
Riley Child and Adolescent Psychiatry Clinic
MedicalResearch: What are the main findings of the study?Dr. Kronenberger: The main findings of the study are that children with cochlear implants had two to five times the risk of delays in executive functioning compared to children with normal hearing. Executive functioning is the ability to regulate and control thinking and behavior in order to focus and achieve goals; it is important for everything from learning to social skills. The areas of executive functioning that were most affected in children with cochlear implants were working memory, controlled attention, planning, and concept formation. Approximately one-third to one-half of the sample of children with cochlear implants had at least mild delays in these areas, compared to one-sixth or fewer of the normal-hearing sample. We think that reduced hearing experience and language delays cause delays in executive functioning to occur at higher rates in children with cochlear implants.
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