Rapid aimed limb movements: age differences and practice effects in component submovements.

摘要: Two experiments are reported in which younger and older adults practiced rapid aimed limb movements toward a visible target region. Ss were instructed to make the as rapidly accurately possible. Kinematic details of examined assess differences component submovements between 2 groups identify changes due practice. The results revealed that produced initial ballistic had same duration but traveled less far than those Ss. Additionally, corrective secondary longer both distance subjects. With practice, modified their submovements, did not modify theirs even after extensive practice on task. show mechanisms underlying qualitatively different from adults.