FIGURE 5. Reconstruction of neural cursor position during pursuit tracking.

a, Technician (red line) and neural cursor (blue line) paths during a 5-s epoch during which MN was asked to track the technician cursor with his neural cursor in real time. MN was able to track the general direction of the technician cursor with the neural cursor, changing directions quickly, while having some difficulty in overlaying the cursors precisely. Trial day 90. b, x, y position control over time during one tracking trial (last 1-min epoch of filter building). The top panel displays the x coordinate position of the technician cursor (red) and the neural cursor (blue); y positions for the same movement are shown in the bottom panel. c, Neural cursor position during a target acquisition/obstacle avoidance task. The four panels represent the four epochs shown in Supplementary Video 5. Green circles indicate targets; red squares indicate obstacles. The thick blue line indicates the path taken by the neural cursor and illustrates the ability to avoid most obstacles and acquire most targets within a randomly arranged field. Data are from trial day 90.