Generation of Reaching Movements: Plausibility and Implications of the Equilibrium Trajectory Hypothesis
作者:
Tamar Flash,
期刊:
Brain, Behavior and Evolution
(Karger Available online 1989)
卷期:
Volume 33,
issue 2-3
页码: 63-68
ISSN:0006-8977
年代: 1989
DOI:10.1159/000115901
出版商: S. Karger AG
关键词: Multi-joint arm movements;Hand trajectories;Equilibrium trajectory hypothesis;Motor control theories;Motion planning;execution;Reaching movements
数据来源: Karger
摘要:
According to the ‘equilibrium trajectory'' hypothesis, the generation of multi-joint arm movements by the CNS involves the gradual shifting of the hand equilibrium position between the movement end points. This work presents a model which suggests that reaching movements are explicitly planned in terms of spatially and temporally invariant hand equilibrium trajectories. Implementing the model in computer simulations, and using stiffness parameters which were measured during arm posture, arm trajectories were simulated and compared to measured trajectories. The success of the predicted behavior in capturing the fine kinematic details of measured movements supports the validity of the proposed model for biological trajectory contro
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