Related Experiment Video
Updated: May 30, 2026
Systematic Hearing Performance Evaluation Process for Adolescents with Cochlear Implantation at Early Ages
Published on: March 24, 2023
Auditory neuropathy/Auditory dyssynchrony in children with Cochlear Implants
Ana Claudia Martinho de Carvalho1, Maria Cecilia Bevilacqua2, Koichi Sameshima3
1Doctoral degree, speech therapy at the Núcleo do Ouvido Biônico (Bionic Ear Center), São Paulo Samaritan Hospital.
Unlabelled:
The electrical stimulation generated by the Cochlear Implant (CI) may improve the neural synchrony and hence contribute to the development of auditory skills in patients with Auditory Neuropathy/Auditory Dyssynchrony (AN/AD).
Aim:
Prospective cohort cross-sectional study to evaluate the auditory performance and the characteristics of the electrically evoked compound action potential (ECAP) in 18 children with AN/AD and cochlear implants.
Material And Methods:
The auditory perception was evaluated by sound field thresholds and speech perception tests. To evaluate ECAP's characteristics, the threshold and amplitude of neural response were evaluated at 80 Hz and 35 Hz.
Results:
No significant statistical difference was found concerning the development of auditory skills. The ECAP's characteristics differences at 80 and 35 Hz stimulation rate were also not statistically significant.
Conclusions:
The CI was seen as an efficient resource to develop auditory skills in 94% of the AN/AD patients studied. The auditory perception benefits and the possibility to measure ECAP showed that the electrical stimulation could compensate for the neural dyssynchrony caused by the AN/AD. However, a unique clinical procedure cannot be proposed at this point. Therefore, a careful and complete evaluation of each AN/AD patient before recommending a Cochlear Implant is advised. Clinical Trials: NCT01023932.
