Sequential movement task.

<p>In a visually guided sequential pointing task, subjects started every trial by placing their index finger on the starting position (red dot). The subject's task was to hit the blue target (referred as target A in the main text) and the green target (target B) in sequence within 400 ms. The green target was located in one of the eight possible locations as shown. The eight possible locations of the green target were determined by the four possible angle changes () between the first and second movement and the two possible distances between the first and second targets. We emphasize that only one green target was present on each trial.