Visual-Electrotactile Stimulation Feedback to Improve Immersive Brain-Computer Interface Based on Hand Motor Imagery

Table 3

Mean information transfer rate (bpm) of both feedback (F) groups (VIS: visual, VES: visual-electrotactile stimulation) for all MI tasks (G: grasping, F/E: flexion/extension, R: random).

F	G	F/E	R
VIS	2.81  0.74	3.77  1.51	2.68  0.90
VES	3.91  0.92	4.56  1.38	2.96  2.08