Learning of visuomotor transformations for vectorial planning of reaching trajectories.

摘要: The planning of visually guided reaches is accomplished by independent specification extent and direction. We investigated whether this separation direction for well practiced movements could be explained differences in the adaptation to directional errors during motor learning. compared time course generalization with two types screen cursor transformation that altered relationship between hand space space. first was a gain change induced required subjects learn new scaling factor. second rotation reference axes. Subjects learned factor at same rate when training one or multiple target distances, whereas learning axes took longer less complete After single target, were able transfer previously unvisited distances directions. In contrast, incomplete; there across arm configurations but not Learning rotated frame only occurred after directions sampled training. These results suggest separate processing brain support idea reaching are planned as hand-centered vector whose established via