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Spinal cord stimulation may enhance and reinstate lower-limb movements, but it is either used in open-loop control or its control depends upon residual motor functions, limiting its applicability in severely paralyzed individuals. The decoding of motor intentions from cortical signals may provide an interesting alternative in such cases. Electroencephalography (EEG) is an ideal solution since it is noninvasive and has been employed diffusely in the past to decode upper-limb movement intentions. Nonetheless, its application in lower-limb control remains underexplored. In this study, we investigated whether EEG can be used to decode lower-limb movement correlates in four SCI patients with varying injury severity during attempted left\/right hip flexion or knee extension across four experimental sessions. We performed statistical analysis of event-related desynchronization\/synchronization and machine learning classification to evaluate single and multi-window decoding performance. Our results suggest that EEG signals can often differentiate lower-limb movement attempts from rest, whereas decoding of left vs right and hip vs knee movements was more elusive. Left vs right decoding accuracy was improved through multi-window decoding, showing multiple sessions with above-chance results. In one patient, it was possible to attain above-chance three-class decoding (left\/right\/rest). Discriminating hip and knee movements proved more challenging. These findings establish a baseline for EEG decoding of lower-limb motor attempts in severely paralyzed individuals and pave the way for the development of brain-controlled neuroprosthetic systems.<\/jats:p>","DOI":"10.1063\/5.0297307","type":"journal-article","created":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T15:47:53Z","timestamp":1768924073000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":1,"title":["Decoding lower-limb movement attempts from electro-encephalographic signals in spinal cord injury patients"],"prefix":"10.1063","volume":"10","author":[{"ORCID":"https:\/\/orcid.org\/0009-0005-4899-3608","authenticated-orcid":false,"given":"Laura","family":"Toni","sequence":"first","affiliation":[{"name":"Modular Implantable Neurotechnologies (MINE) Laboratory, Universit\u00e0 Vita Salute San Raffaele & Scuola Superiore Sant'Anna 1 , 20132 Milano,","place":["Italy"]},{"name":"The BioRobotics Institute, 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