The effect of distance on reaction time in aiming movements
The effect of distance on reaction time in aiming movements
复制标题
距离对瞄准动作反应时间的影响
作者：
Heather Munro;Mandy S. Plumb;Andrew D. Wilson;Justin H. G. Williams;M. Mon
在瞄准任务中，目标距离影响运动持续时间，但对反应时间的影响研究较少。RT是制备和起始的函数。实验1预先提示运动（允许提前准备），发现距离对rt没有影响。因此，目标距离不影响起始时间。实验2去除了预提示信息，发现准备一个距离增加的动作会延长RT。实验3在无提示距离的情况下研究了向目标移动的提示大小，发现提示大小改变了峰值速度和运动持续时间，但RT仅受距离的影响。因此，振幅影响准备时间（由于持续时间改变以外的原因），但不影响起始时间。我们假设，RT距离效应可能是由于与进一步目标相关的可能轨迹数量增加：这一假设可以在未来的实验中得到验证。
Target distance affects movement duration in aiming tasks but its effect on reaction time (RT) is poorly documented. RT is a function of both preparation and initiation. Experiment 1 pre-cued movement (allowing advanced preparation) and found no influence of distance on RT. Thus, target distance does not affect initiation time. Experiment 2 removed pre-cue information and found that preparing a movement of increased distance lengthens RT. Experiment 3 explored movements to targets of cued size at non-cued distances and found size altered peak speed and movement duration but RT was influenced by distance alone. Thus, amplitude influences preparation time (for reasons other than altered duration) but not initiation time. We hypothesise that the RT distance effect might be due to the increased number of possible trajectories associated with further targets: a hypothesis that can be tested in future experiments.