Motor imagery-based brain-computer interface training for post-stroke upper limb dysfunction: systematic review and meta-analysis.

TL;DR

Motor imagery-based brain-computer interface training produced statistically significant but modest improvements in isolated upper limb movements and fine motor control post-stroke, though superiority over traditional rehabilitation remains unestablished.

Key findings

• Meta-analysis of 24 RCTs (846 participants) showed MI-BCI improved Fugl-Meyer Assessment for Upper Extremity (s.m.d. 0.31) and Wolf Motor Function Test (s.m.d. 0.45)
• Improvements were specific to isolated limb movements and fine motor control; effects on complex functional activities and ADL were not significant
• Control condition heterogeneity (sham vs. traditional rehabilitation) limits definitive conclusions about MI-BCI superiority over standard care
• Results support MI-BCI as adjunctive therapy but do not establish clear advantage over conventional post-stroke upper limb rehabilitation

Why this matters at the bedside

MI-BCI training shows measurable but modest motor benefits for post-stroke hemiplegia, particularly for basic motor control. However, lack of demonstrated superiority over traditional rehabilitation and absence of functional/ADL improvements limit clinical utility as standalone or preferred treatment.