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Background: Motor imagery (MI) is defined as the cognitive ability to simulate motor movements while suppressing muscular activity. The electroencephalographic (EEG) signals associated with lower limb MI have become essential in brain-computer interface (BCI) research aimed at assisting individuals with motor disabilities.
Objective: This systematic review aims to evaluate methodologies for acquiring and processing EEG signals within brain-computer interface (BCI) applications to accurately identify lower limb MI.
Methods: A systematic search in Scopus and IEEE Xplore identified 287 records on EEG-based lower-limb MI using artificial intelligence. Following PRISMA guidelines (non-registered), 35 studies met the inclusion criteria after screening and full-text review.
Results: Among the selected studies, 85% applied machine or deep learning classifiers such as SVM, CNN, and LSTM, while 65% incorporated multimodal fusion strategies, and 50% implemented decomposition algorithms. These methods improved classification accuracy, signal interpretability, and real-time application potential. Nonetheless, methodological variability and a lack of standardization persist across studies, posing barriers to clinical implementation.
Conclusions: AI-based EEG analysis effectively decodes lower-limb motor imagery. Future efforts should focus on harmonizing methods, standardizing datasets, and developing portable systems to improve neurorehabilitation outcomes. This review provides a foundation for advancing MI-based BCIs.
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http://dx.doi.org/10.3390/s25165030 | DOI Listing |
Integr Med Res
March 2026
National Research Center in Complementary and Alternative Medicine (NAFKAM), Department of Community Medicine, Faculty of Health Sciences, The Arctic University of Norway UiT, Tromsø, Norway.
Background: Athroplastic surgery often results in acute post-operative pain, hindering rehabilitation compliance. To improve pain management and functional recovery, guided and motor imagery (GMI) exercises were introduced in hip and knee arthroplasty.
Methods: A pragmatic prospective mixed-methods implementation evaluation was conducted at the orthopaedic department of Schakelring, the Netherlands.
Cureus
September 2025
Rheumatology, University Hospitals Coventry & Warwickshire, Coventry, GBR.
Complex regional pain syndrome (CRPS) is a debilitating chronic pain condition that may develop after fractures, surgery, or soft tissue trauma. It is characterized by pain disproportionate to the initial injury, often accompanied by sensory, motor, autonomic, and trophic changes. Despite extensive research, pathophysiology remains unclear, and treatment approaches are varied, with inconsistent supporting evidence.
View Article and Find Full Text PDFBrain Stimul
September 2025
Department of Philosophy, University of Milan, Milan, via Festa Del Perdono, 7, 20122, Italy; Cognition in Action (CIA) Unit, PHILAB, University of Milan, Via Santa Sofia, 9, 20122, Italy. Electronic address:
Background: To investigate covert motor processes, transcranial magnetic stimulation (TMS) studies often use motor-evoked potentials (MEPs) as a proxy for inferring the state of motor representations. Typically, these studies test motor representations of actions that can be produced by the isolated contraction of one muscle, limiting both the number of recorded muscles and the complexity of tested actions. Furthermore, univariate analyses treat MEPs from different muscles as independent, overlooking potentially meaningful intermuscular relationships encoded in MEPs amplitude patterns at the single-trial level.
View Article and Find Full Text PDFIEEE J Biomed Health Inform
September 2025
The multi-user motor imagery brain-computer interface (BCI) is a new approach that uses information from multiple users to improve decision-making and social interaction. Although researchers have shown interest in this field, the current decoding methods are limited to basic approaches like linear averaging or feature integration. They ignored accurately assessing the coupling relationship features, which results in incomplete extraction of multi-source information.
View Article and Find Full Text PDFGait Posture
September 2025
UHasselt, REVAL Rehabilitation Research Center, Faculty of Rehabilitation Sciences, Wetenschapspark 7, Diepenbeek 3590, Belgium. Electronic address:
Objective: Although emotions and postural control are strongly intertwined, more research is necessary to understand this intricate relationship. Therefore, we examined the effect of script-driven emotional imagery on postural control in healthy individuals.
Methods: Forty-four healthy participants (50 % female, median age=27) imagined three emotional imagery scripts (hostile, acceptance, relaxation) in upright standing without visual input while center of pressure (CoP) was measured (mean sway, sway velocity, , and standard deviation in antero-posterior and medio-lateral directions, and sway path and area).