Auditory neural responses: Do we need special consideration for the paediatric population?
A Falistocco1, A Kontides2, M Takanen2, A Linares1.
(1) Grupo Orono, Rosario, Argentina. (2) MED-EL , Innsbruck, Austria.
Introduction
Audio processors of cochlear implant (CI) users need individualized adjustment of the fitting parameters. Fitting methods are mainly based on behavioural responses, but sometimes combined with objective measures. From the objective measures, the most extensively used is to use electrically evoked compound action potential (ECAP) data to create an initial profile (Vaerenberg et al., 2014).
Accordingly in this study, we compare ECAP data from children and adults to see whether there are any differences that might affect the fitting procedure.
Method
Twelve children and eight adults (altogether four bilateral) participated in the study. Their age varied between 5 and 70 years (mean=22.4, SD=±20.3 years) and their experience with the CI was between 1 month and 13 years at the time of testing. The ECAPs were obtained on all active electrodes using the AutoART task of the  clinical software MAESTRO. All measurements were performed using default parameters (stimulation range 0-30 charge units, phase duration determined automatically according to individual compliance limit and stop criteria on ECAP threshold finding).
Only data from the highest-ranked recording electrode from such measurements, where the AutoART algorithm determined an ECAP threshold, were considered for data analysis. Specifically, ECAP thresholds, slopes and supra-threshold N1 latencies (at 30% above threshold) were considered for comparison.
Results
No statistically significant differences were found between the groups for any of the investigated aspects. ECAP thresholds exhibited larger values for basal electrodes for all the participants. Steeper slopes were found in the apical area and a general, albeit statistically non-significant, trend of steeper slopes in children. Regarding latency, larger values at apical electrodes were observed in the adult group, but the difference failed to reach statistical significance.

**Auditory neural responses: Do we need special consideration for the paediatric population?**
A Falistocco1, A Kontides2, M Takanen2, A Linares1.
(1) Grupo Orono, Rosario, Argentina. (2) MED-EL , Innsbruck, Austria.
**Introduction**
Audio processors of cochlear implant (CI) users need individualized adjustment of the fitting parameters. Fitting methods are mainly based on behavioural responses, but sometimes combined with objective measures. From the objective measures, the most extensively used is to use electrically evoked compound action potential (ECAP) data to create an initial profile (Vaerenberg et al., 2014).
Accordingly in this study, we compare ECAP data from children and adults to see whether there are any differences that might affect the fitting procedure.
**Method**
Twelve children and eight adults (altogether four bilateral) participated in the study. Their age varied between 5 and 70 years (mean=22.4, SD=±20.3 years) and their experience with the CI was between 1 month and 13 years at the time of testing. The ECAPs were obtained on all active electrodes using the AutoART task of the  clinical software MAESTRO. All measurements were performed using default parameters (stimulation range 0-30 charge units, phase duration determined automatically according to individual compliance limit and stop criteria on ECAP threshold finding).
Only data from the highest-ranked recording electrode from such measurements, where the AutoART algorithm determined an ECAP threshold, were considered for data analysis. Specifically, ECAP thresholds, slopes and supra-threshold N1 latencies (at 30% above threshold) were considered for comparison.
**Results**
No statistically significant differences were found between the groups for any of the investigated aspects. ECAP thresholds exhibited larger values for basal electrodes for all the participants. Steeper slopes were found in the apical area and a general, albeit statistically non-significant, trend of steeper slopes in children. Regarding latency, larger values at apical electrodes were observed in the adult group, but the difference failed to reach statistical significance.

Auditory neural responses: Do we need special considerations for pediatric population?

It is with great pleasure and enthusiasm, that on behalf of the Cochlear Implant centers of the Radboud UMC in Nijmegen and Erasmus MC Sophia Children’s Hospital in Rotterdam to invite you to attend the 16th European Symposium on Pediatric Cochlear Implantation to Rotterdam, the Netherlands in 2023.

Yours sincerely, on behalf of the CI Centers at Radboud UMC and Erasmus MC,