Fig. 2.

Example data from a single right-handed subject. One round of data is shown from the Target Task (A), the Center-Out Task (B), the Circle Tracking Task (C), and the Complex Tracking Task (D) performed with the left hand (left) and one round performed with the right hand (right). Open circles show target locations, and filled circles are the positions of subject's fingertip. In A, C, and D, simultaneous target and fingertip positions are connected by gray lines. In B, fingertip trajectories are indicated by dotted black lines, and the filled circle from each trial indicates the fingertip's position when it first contacted the target.