Exploiting the geometry of the solution space to reduce sensitivity to neuromotor noise
Fig 7
Workspaces and solution spaces of the four tasks.
(A) Workspaces of the four tasks. The red circle in the middle is the post, the yellow circle is the target, and the pink bar is the lever arm; the black arrow indicates the direction of the arm movement. Each task has a different target location. The Box-shape task also located the post away from the center (0, 0 cm). (B) Solution spaces of the four tasks. Each of the four panels corresponds to the four workspaces in panel A. The error of all combinations of release angles and release velocities were calculated and coded by color; green denotes the set of points that hit the target with errors smaller than 1.1cm; yellow denotes errors larger than 1.1cm and smaller than 2.5cm; grey shades represent errors larger than 2.5cm; black denotes throws when the error is larger than 40cm or the ball trajectory hit the post.