Fig. 2.
Twenty 3D pointer-tip trajectories of one representative participant performing reaching movements under single-step trials to the center target (certain condition, CCT) and double-step trials to the ipsilateral target (UIP), to the center target under uncertainty target condition (UCT) and contralateral target (UCL) using (a) left arm or (b) right arm. Black circle indicates the target location for that condition and black dots indicate the time of peak velocity for each trial.