A MODEL OF DURATION IN NORMAL AND PERTURBED REACHING MOVEMENT
A MODEL OF DURATION IN NORMAL AND PERTURBED REACHING MOVEMENT
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DOI：
10.1007/bf00198466
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发表时间：
1994-10-01
影响因子：
1.9
通讯作者：
HOFF, B
中科院分区：
文献类型：
--
作者：
HOFF, B
在对人类和灵长类动物的运动行为进行建模时，优化已用于以数学方式描述到达运动期间的手部轨迹，并将运动的持续时间作为边界条件的一部分给出。由于持续时间是模型的输入而不是输出，因此缺乏持续时间如何取决于运动环境的描述。在目前的工作中，我们扩展了到达轨迹规划的最小加加速度模型，以包括持续时间的惩罚，并表明它可以用于量化到达运动的速度和努力之间的权衡。然后，我们表明，名义到达运动的给定权衡可以预测相关运动的持续时间，特别是在其过程中受到目标扰动的到达运动。该数学模型针对多个独立的实验数据进行了测试。
In modeling human and primate motor behavior, optimization has been used to mathematically describe hand trajectories during reaching movement, with the duration of the movement given as part of the boundary conditions. As duration is an input to the model rather than an output, a description is lacking of how the duration depends upon the circumstances of the movement. In the present work, we extend a minimum jerk model of reach trajectory planning to include a penalty for duration and show that it can be used to quantify the trade-off between quickness and effort in reaching movements. We then show that a given trade-off for a nominal reaching movement can predict the duration of related movements, specifically reaching movements subject to perturbation of the target during their course. The mathematical model is tested against several independent bodies of experimental data.