**5. Conclusions**

The RobOtol® surgical robot allows for the correct, safe and gentle insertion of the cochlear implant electrode inside the cochlea. The use of electrocochleography measurements during robotic cochlear implantation offers an additional opportunity to evaluate and modify the electrode array insertion on an ongoing basis, which may contribute to the preservation of residual hearing.

**Author Contributions:** Conceptualization, W.G. and M.W.; methodology, W.G. and A.B.; formal analysis, W.G., P.P. and P.B.; investigation, W.G., A.B., P.B. and R.G.; data curation, W.G., P.P. and P.B.; writing—original draft preparation, W.G., P.P. and M.W.; writing—review and editing, W.G., A.B., R.G. and M.W.; visualization, A.B. and P.B.; supervision, W.S. and M.W.; project administration, W.S. and M.W. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research received no external funding.

**Institutional Review Board Statement:** The study was conducted in accordance with the Declaration of Helsinki and approved by the local Ethics Committee of Poznan University of Medical Sciences (decision number 1033/19, date of approval 7 November 2019).

**Informed Consent Statement:** Informed consent was obtained from all subjects involved in the study.

**Data Availability Statement:** The data presented in this study are available on request from the corresponding author.

**Acknowledgments:** We would like to thank Łukasz Olszewski (affiliated at Advanced Bionics, Poland) for his invaluable input to the present study. His contribution included support for electrocochleography measurements and preparation of several figures.

**Conflicts of Interest:** The authors declare no conflict of interest.
