Fig. 3.

Kinematic error emerges at higher velocities. Naïve movements to the 30 cm target show large rightward deflections (black). At the end of training, movement curvature has been eliminated (gray). For subjects who previously trained on the 15 cm target, movements are initially straight and they follow the trajectory of adapted movements (blue). Curvature emerges when movement velocity exceeds the range of velocities experienced during training (red portion of movements). This is the range of movements in which subjects produce less force than is necessary to compensate for the force field (Fig. 2C).