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. ud
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机译：目标距离会影响瞄准任务中的运动持续时间，但其对反应时间（RT）的影响记录很少。 RT是准备和启动的函数。实验1预示了运动（允许进行进一步的准备），并且发现距离对RT没有影响。因此，目标距离不会影响启动时间。实验2删除了提示信息，发现准备增加距离的运动会延长RT。实验3探索了在非提示距离下移动到提示大小目标的过程，发现大小改变了峰值速度和运动持续时间，但RT仅受距离影响。因此，振幅会影响准备时间（除了更改持续时间以外的原因），而不会影响启动时间。我们假设RT距离效应可能是由于与其他目标相关的可能轨迹数量增加所致：这一假设可以在以后的实验中进行验证。 ud
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