The Time-Course of Implicit Learning

This study aimed to investigate the time-course and contribution of implicit motor learning by comparing two types of cursor-feedback during a reaching task: terminal feedback and cursor jump feedback. The results showed a reduction in implicit reach aftereffects for both feedback groups, but no change in the speed by which aftereffects emerge. Explicit strategy use was also measured, and greater explicit use was found for both feedback groups. However, there was no relationship found between the implicit and explicit processes. These findings suggest that implicit adaptation occurs much earlier in reach training, regardless of feedback type, and highlight the potential for optimizing the learning system in motor adaptation.