Figure 2.

Motor performance during the baseline, training, and testing periods. A, Top, Hand paths for movements to each of the six peripheral targets with continuous visual feedback during baseline, initial exposure to rotation, early training, and the testing period. Thirty degree rotations were applied on movements from C to T2 and from C to T5 during the training and testing periods. Bottom, Hand paths for no-visual-feedback probe trials to each target. Note that targets are drawn to scale; in subsequent figures targets are drawn larger for ease of viewing. Hand paths in the baseline and testing periods are across-subject averages; however, individual movements are shown for the initial exposure and early training epochs to avoid unnecessary smoothing. B, Learning curves showing the average movement direction measured 100 ms after movement onset over the course of an experiment. Trace colors match the movement colors in A.