Brenner Eli, van Dam Maarten, Berkhout Stef, Smeets Jeroen B J
Research Institute MOVE, Faculty of Human Movement Sciences, VU University, van der Boechorststraat 9, 1081 BT Amsterdam, The Netherlands.
Acta Psychol (Amst). 2012 Sep;141(1):104-11. doi: 10.1016/j.actpsy.2012.07.002. Epub 2012 Aug 3.
The reported resolution of timing the moment of impact in fast human movements differs widely depending on the task. Surprisingly, better timing is reported for the demanding task of batting a ball than for the much simpler task of tapping in synchrony with two hands. We wondered whether this is because a sizeable part of timing variability arises from misjudging the distance in the direction of one's own movement, so that moving faster (as the bat does when moving toward a ball) improves timing. We found that moving faster does indeed improve timing in both the above-mentioned tasks. After removing the proposed contribution of misjudging the distance in the direction of one's own movement, we estimated that the remaining standard deviation in timing is just over 6ms for both tasks.
据报道，在快速的人类动作中，确定撞击时刻的分辨率因任务不同而有很大差异。令人惊讶的是，击球这项要求较高的任务的计时表现，比双手同步轻敲这个简单得多的任务更好。我们想知道，这是否是因为相当一部分计时变异性源于对自身运动方向上的距离判断错误，以至于移动速度更快（就像击球时球棒朝着球移动那样）能改善计时。我们发现，在上述两项任务中，移动速度更快确实能改善计时。在去除了因对自身运动方向上的距离判断错误而产生的影响后，我们估计这两项任务计时的剩余标准差刚好超过6毫秒。
