Figure 8.

Panel (a): visual feedback of the pseudo-BCI controller; the subject had partial control on the red cursor, whose position was converted at discrete times (2 seconds) into navigation commands (step left, right, or no stepping). Panel (b): vibrotactile feedback of the pseudo-BCI controller; each tactor of the stripe encoded the tactile version of the visual cursor. Panel (c): scheme of the task; the drawing to the left represents the whole maze, with the ideal path marked in yellow. In the drawing to the right, the scrolling red frame shows the portion of the maze visible at once of the task display.