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Auditory processing following sequential bilateral cochlear implantation: a pediatric case study using event-related

Alexandra P F Key¹, Heather L Porter, Tamala Bradham

¹Department of Hearing and Speech Sciences, Vanderbilt University, 230 Appleton Place, Peabody Box 74, Nashville, TN 37203, USA. sasha.key@vanderbilt.edu

Journal of the American Academy of Audiology

|April 15, 2010

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Sequential bilateral cochlear implants improve auditory processing in children, even after prolonged deafness. This case study shows enhanced benefits beyond a single implant for sequential bilateral cochlear implant users.

Area of Science:

Neuroscience
Audiology
Speech and Hearing Sciences

Background:

Previous studies suggest auditory cortex reorganization in cochlear implant users within 6-8 months post-implantation.
Bilateral cochlear implantation yields better outcomes when performed simultaneously or with minimal delay, especially at a younger age.

Purpose of the Study:

To investigate auditory processing changes in a child receiving sequential bilateral cochlear implants.
To evaluate auditory processing at single syllable and word levels.

Main Methods:

Recorded brain responses (event-related potentials) at multiple time points post-second cochlear implant activation.
Utilized passive paradigms with speech and word-level auditory stimuli.
Compared the participant's responses to a control group of children with normal hearing.

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Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages

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Main Results:

Observed changes in auditory processing levels following sequential bilateral cochlear implantation.
Demonstrated improvements beyond the benefits of a single cochlear implant.

Conclusions:

Sequential bilateral cochlear implantation enhances auditory processing.
Benefits are evident even with an extended period of deafness in the second ear.