Dear Dr. Kasper,
I have a question regarding cochlear implants. Considering the language processing centers are located in the left side of the brain, would this make a difference when someone is deciding which ear to implant?
Sincerely,
JT
Dear JT,
A cochlear implant is an amazing device that allows individuals with significant hearing loss to gain or regain perception of sound. It accomplishes this through an electrode array that is surgically inserted into the inner ear. A customized external processor that converts sound in the environment to electrical impulses activates the electrodes. In turn, the electrodes stimulate the remaining portions of the hearing nerve and sound information is then transmitted to the brain where it is heard.
Not everyone with hearing
loss is a candidate for a cochlear implant. Adults who are 18 years or older
who have severe to profound sensory-neural hearing loss in both ears and don’t
benefit through the use of standard hearing instruments, are potential
candidates. Also, children as young as 12 months old with profound
sensory-neural hearing loss in both ears might be candidates, as well.
To answer your question, I spoke with Jaclyn Spitzer, Ph.D., the Director of Audiology and Speech-Pathology at New York-Presbyterian Medical Center in New York City. In addition to her significant clinical experience, Dr. Spitzer has published extensively on her research with cochlear implants and patient outcomes.
According to Dr. Spitzer, “Despite the fact that the brain has specialization in the two hemispheres, the hemispheres do not operate independently. There is neural communication between the sides that transfers information between the locations.” She continues, “Research has demonstrated that there is no difference in cochlear implant performance between persons implanted on the right side versus the left.” Dr. Spitzer concluded by noting there are other factors that are much more important when the team is considering which ear to implant. I would defer to your team of healthcare professionals to help you determine what those factors might be in your specific case.
Thank you for your question, JT and good luck!
CK
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