Effects Of Virtual Reality–based Mirror Visual Feedback (VR-MVF) On Upper Limb Motor And Cognition Function In Stroke

Objective: The virtual reality–based mirroring therapy system(VR-MVF)was used to train the upper limb motor function of post-stroke patients.The abnormal motor posture and pattern were corrected by quantifying the amount of movement and real-time feedback,and the system was monitored and evaluated to observe the effectiveness of virtual reality mirroring therapy on the improvement of upper limb motor function and cognitive function of post-stroke patients,and to explore the correlation between the improvement of motor function and cognitive function.Methods: The patients were randomly divided into the conventional exercise group(n=29)and the virtual reality–based mirror visual feedback therapy group(n=31).The conventional exercise group received conventional exercise therapy for 60 minutes each time;the VR-MVF group received virtual reality mirror game training and conventional exercise therapy for 30 minutes each time for a total of 60 minutes,and all training was performed once a day,5 days a week for 2 weeks.All patients underwent FMA score,Brunnstrom staging assessment,joint mobility measurement,MMSE score,MOCA score,and TMT linkage test before and after 2 weeks of training,respectively.Result: After 2 weeks of treatment,there were significant improvements in shoulder abduction,flexion-extension mobility,elbow flexion-extension mobility,FMA score,Brunnstrom(upper limb)score,MMSE score,attention score,and total MOCA score in the VR-MVF group compared with the conventional exercise group.Before and after treatment,there were significant improvements in shoulder abduction and flexion-extension mobility,elbow flexion-extension mobility,FMA score,Brunnstrom(upper extremity)score,MMSE score,naming score,attention score,and total MOCA score in the VR-MVF group;there was no significant difference in TMT linkage test in the VR-MVF group with left-sided hemiplegia.There was a moderate positive correlation between motor performance and overall cognitive function.Conclusion: Virtual reality–based mirror visual feedback therapy was effective in improving upper limb motor and cognitive function in stroke patients,and the improvement in motor function correlated with cognitive function.