关于运动协同组织的中枢反向耦合假说：一个物理隐喻和一个神经模型。
A central back-coupling hypothesis on the organization of motor synergies: a physical metaphor and a neural model.
作者信息
Latash Mark L, Shim Jae Kun, Smilga Andrei V, Zatsiorsky Vladimir M
机构信息
Department of Kinesiology, Rec.Hall-268N, The Pennsylvania State University, University Park, PA, 16802, USA.
出版信息
Biol Cybern. 2005 Mar;92(3):186-91. doi: 10.1007/s00422-005-0548-0. Epub 2005 Feb 28.
Abstract
We offer a hypothesis on the organization of multi-effector motor synergies and illustrate it with the task of force production with a set of fingers. A physical metaphor, a leaking bucket, is analyzed to demonstrate that an inanimate structure can show apparent error compensation among its elements. A neural model is developed using tunable back-coupling loops as means of assuring error compensation in a task-specific way. The model demonstrates non-trivial features of multi-finger interaction such as delayed emergence of force stabilizing synergies and simultaneous stabilization of the total force and total moment produced by the fingers. The hypothesis suggests that neurophysiological structures involving short-latency feedback may play a central role in the formation of motor synergies.
摘要
我们提出了一个关于多效应器运动协同组织的假设，并用一组手指进行力产生的任务对其进行了说明。分析了一个物理隐喻——漏水桶，以证明一个无生命的结构在其元素之间可以表现出明显的误差补偿。开发了一种神经模型，使用可调谐的反向耦合回路以特定于任务的方式确保误差补偿。该模型展示了多指相互作用的重要特征，例如力稳定协同作用的延迟出现以及手指产生的总力和总力矩的同时稳定。该假设表明，涉及短潜伏期反馈的神经生理结构可能在运动协同的形成中起核心作用。
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