VR-MI-BCI for Spinal Cord Injury Rehabilitation: Limitations of Current Research and Design of an Improved Experimental Protocol

Paralysis caused by spinal cord injury can result in the loss of motor function in patients, and the combination of VR with motor imagery (MI) and brain-computer interface (BCI) technology shows considerable potential as a rehabilitation approach. This article first provides a brief introduction to the fundamental principles of this rehabilitation method, and then reviews the common problems that exist in current related research: many experiments lack appropriate control groups, the methods of motor imagery are not standardized, and the statistical methods used for data analysis also have limitations. These issues may compromise the reliability of the findings. To address these issues, this paper theoretically designs an improved experimental protocol, refines subject grouping, establishes a standardized motor imagery guidance procedure, incorporates multi-channel signal monitoring to remove interference signals, selects a linear mixed model for data analysis, and also includes long-term follow-up to observe rehabilitation outcomes. This article analyzes how this optimization plan can mitigate the biases present in previous studies, but also discusses the practical difficulties that will still be encountered during its implementation. This improved approach may provide a useful reference for future rehabilitation research.