**5. Conclusions**

In conclusion, our study suggests that DBS does not induce major psychological changes as measured in terms of illness representations and coping strategies. These conclusions are in line with those of Gilbert et al. [27], who pointed out the lack of current empirical data showing significant changes in personality, self-identity, agency, authenticity, autonomy and self after DBS. Yet, we advocate that future studies continue exploring how psychological variables may impact the acceptation process of life with DBS. In this regard, the burden of normality model may be useful to identify and address the non-motor issues occurring after DBS in PD patients [17]. In addition, and as illustrated in a recent qualitative study [53], considering data related to psychological aspects before surgical implantation may be predictive of post-operative outcome. This implies that a complete psychological assessment taking place before surgery would help clinicians identify risks of developing post-surgical psychosocial complications.

**Author Contributions:** Conceptualization, M.B., N.F. and P.G.; methodology, M.B., N.F., F.H. and P.G.; software, M.B. and P.G.; validation, M.B., N.F. and P.G.; formal analysis, M.B., F.H. and P.G.; investigation, M.B., J.F.A.D.S., M.R., P.R.B., A.C. and K.W. ; resources, M.B., J.F.A.D.S., K.W.; data curation, J.F.A.D.S. and M.R.; writing—Original draft preparation, M.B.; writing—Review and editing, M.B., N.F. and P.G.; visualization, M.B., N.F., K.W. and P.G.; supervision, N.F. and P.G.; project administration, P.R.B., A.C. and K.W.; funding acquisition, P.R.B. and A.C. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by the Swiss National Science Foundation, gran<sup>t</sup> number CR31I3\_149578/1.

**Acknowledgments:** We are thankful to Bernard Baertschi from the Institute for Biomedical Ethics of the University of Geneva for his precious advice during the construction of the manuscript.

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