Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10459332 | Human Movement Science | 2005 | 17 Pages |
Abstract
The goal of this experiment was to show that expertise in interceptive actions can be explained by a shorter delay in movement regulation. In this contribution, we tested tennis experts and non-experts using a simulated interceptive task. The experimental device simulated linear motion of an object toward a target on a horizontal runway. Participants had to intercept the simulated moving object with their right hand holding a cart that could slide along a horizontal track perpendicular to the runway. Three different velocity conditions were used: a constant velocity condition that maintained the initial velocity (2Â m/s) constant until arriving on the target; the decelerated and accelerated velocity conditions, in which the velocity suddenly changed (400Â ms before its arrival on the target) from 2 to 1Â m/s or 3Â m/s, respectively. Timing accuracy and movement correction after the unexpected velocity change were analysed. The experts were more accurate in the decelerative case (â29 and â124Â ms respectively), in the accelerative case (69 and 116Â ms respectively), but not in the constant velocity case (2 and 13Â ms respectively). Findings can be explained by the shorter visuo-motor delay (VMD: the time required to adapt the movement to the new velocity) for the experts (162Â ms) than for the non-experts (221Â ms). This shorter VMD offers more time to adapt the interceptive movement to the new velocity. These results can be interpreted as an optimization of the perception-action coupling with expertise.
Keywords
Related Topics
Life Sciences
Neuroscience
Cognitive Neuroscience
Authors
Cyrille Le Runigo, Nicolas Benguigui, Benoit G. Bardy,