(Lack of) Error-based adaptation to strong visuomotor perturbation.

The plot shows movement error in degrees versus trial number during simulation of the 3-phase experiment when a visuomotor perturbation is introduced in the beginning of ADAPT phase and removed in the beginning of POST phase. Solid lines show the 32-run average angle difference between the perceived target position and the perceived hand/cursor position. (A) Simulation of adaptation to 90 degrees visuomotor rotation (blue line) and 90 degrees shift (red line). (B) Simulation of adaptation to the x-reflection perturbation. Note that the perturbation size is the same for the shift and rotation perturbation in (A). However, the trial-to-trial dynamics of the error are very different, as well as the magnitudes of the aftereffects.