## 5 Conclusions  
We have provided an analysis framework for studying FC patterns in children with CP by presenting alterations at both the group level - indicating observed common trends for all patients - and at an individual level, which should provide more subject-particular insights. There is a considerable number of variables to be investigated, as well as several methodological choices that remain open problems in the literature. Given the low number of common functional links for the group graph, only a study regarding the (re)organization of functional connections was conducted. In this case, our main findings were: (1) FC links are more consistent across subjects prior to the VR-MI task; (2) the reorganization between the pre- and post-session recordings shifts connections along the anterior-posterior axis; and (3) there is a lateralization of functional links on the right hemisphere. We raised the hypothesis that (1) and (2) might relate to MI-learning and short-term functional plasticity mechanisms. However, we currently have no speculations for (3). Regarding the intra-subject analysis, as expected, alterations in the graphs' topology are largely subject-specific, even though a common \"back-bone\" of network alterations could be observed through the group's graph. Although results with this type of analysis permit a large array of interpretations that can be drawn for each subject, overall patterns showed dependence between graph metrics' variations and the frequency bands, suggesting that short-term functional reorganization in the brain could be frequency-specific. In particular, our findings hint at three frequency band-dependent facets of such reorganization mechanisms occurring for the lower (in our case, \(\alpha_{1}\) and \(\alpha_{2}\)) and higher (\(\beta_{2}\) and \(\gamma\)) frequency ranges, with an intermediate phase represented by \(\beta_{1}\). Future analyses may expand on ours for a larger group of subjects to verify whether the observed general tendencies are maintained. Additionally, our analysis framework can be extended to other thresholds ranges and methodologies of FC estimation. This can lead to valuable and constructive comparisons that should aid in enhancing our current understanding on RS-EEG-FC patterns of children with CP, as well as on the influence of MI interventions on such patterns. Conceptualization, C.A.S.F. and J.I.S. ; methodology, C.A.S.F., R.A. and G.C. ; validation, all authors; formal analysis, C.A.S.F. ; investigation, J.I.S., E.R. and M.D.d.C. ; resources, J.I.S., E.R. and M.D.d.C. ; data curation, C.A.S.F. and J.I.S. ; writing--original draft preparation, C.A.S.F. ; writing--review and editing, all authors; visualization, all authors; supervision, J.I.S., R.A., G.C., E.R. and M.D.d.C. ; project administration, J.I.S., E.R. and M.D.d.C. funding acquisition, J.I.S., E.R., M.D.d.C. and G.C. All authors have read and agreed to the published version of the manuscript. This research was funded by the Sao Paulo Research Foundation (FAPESP) grants number 2019/18409-9, 2016/22116-9 and 2013/18556-9; the Brazilian's National Council for Scientific and Technological Development (CNPq) grants 308811/2019-4 and 142229/2016-4; the Programas de Actividades I+D en la Comunidad de Madrid and Structural Funds of the EU (S2018/NMT-4331); and the Spanish Ministry of Science and Innovation, project Discover2 Walk (PID2019-105110 RB-C31). The APC was funded by Discover2 Walk. The study was carried out with the number R-0032/12 from Local Ethical Committee of the Hospital Infantil Nino Jesus (Madrid, Spain). Public trial registered on 23 March 2017: ISRCTN18254257. Informed Consent Statement: Informed consent was obtained from all subjects involved in the study. Data Availability Statement: Data will be shared upon reasonable request subjected to parental consent.