The discrimination, acquisition, and retention of aiming movements made with and without elastic resistance
The discrimination, acquisition, and retention of aiming movements made with and without elastic resistance
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DOI：
10.1518/001872099779577291
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发表时间：
1999-03-01
期刊：
影响因子：
3.3
通讯作者：
Anderson, DI
中科院分区：
文献类型：
--
作者：
Anderson, DI
通过两个实验比较了有弹性阻力和无弹性阻力对动作的辨别、习得和保留。实验1采用心理物理学的方法，揭示了在有弹性阻力和无弹性阻力的情况下，800毫米的离散运动可以被同样精确地区分出来。同样，在实验2中，在有弹性阻力和没有弹性阻力的情况下，离散瞄准运动的空间精度也没有差异。与预期相反，在练习24小时后进行的保留测试中，当移除关于运动结果的KR时，有弹性阻力的运动的准确性下降得比没有阻力的运动快得多。这些发现质疑了通常的假设，即弹性阻力是控制机制的理想特征。本研究的实际或潜在应用包括设计控制机制，以促进在各种任务和环境条件下的性能。
Two experiments were conducted to compare the discrimination, acquisition, and retention of movements made with and without elastic resistance. Using methods from psychophysics, Experiment 1 revealed that a discrete 800-mm movement could be discriminated equally precisely when it was performed with and without elastic resistance. Similarly, there was no difference in the spatial accuracy of a discrete aiming movement made with and without elastic resistance when extended practice with knowledge of results (KR) was provided in Experiment 2. Contrary to expectation, when KR about the outcome of the movement was removed on a retention test given 24 h after practice, the accuracy of the movements made with elastic resistance declined much more rapidly than those made without resistance. These findings question the common assumption that elastic resistance is a desirable characteristic of a control mechanism. Actual or potential applications of this research include the design of control mechanisms that facilitate performance under a variety of task and environmental conditions.