Exploiting Task Constraints for Self-Calibrated Brain-Machine Interface Control Using Error-Related Potentials
(a) Experimental protocol. The protocol showed a 5 × 5 grid with a virtual cursor (green circle) and a goal location (shadowed in red). (b) The cursor could perform five different actions (from top to bottom, move one position up, down, left, right, or performing a goal-reached action). (c) Correct actions (i.e. optimal policy) from each state for the goal exemplified in (a). Extracted from  with permission.