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首页> 外文期刊>The European Journal of Neuroscience >Coding of movement- and force-related information in primate primary motor cortex: a computational approach.
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Coding of movement- and force-related information in primate primary motor cortex: a computational approach.

机译：灵长类初级运动皮层中与运动和力有关的信息的编码：一种计算方法。

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Coordinated movements result from descending commands transmitted by central motor systems to the muscles. Although the resulting effect of the commands has the dimension of a muscular force, it is unclear whether the information transmitted by the commands concerns movement kinematics (e.g. position, velocity) or movement dynamics (e.g. force, torque). To address this issue, we used an optimal control model of movement production that calculates inputs to motoneurons that are appropriate to drive an articulated limb toward a goal. The model quantitatively accounted for kinematic, kinetic and muscular properties of planar, shoulder/elbow arm-reaching movements of monkeys, and reproduced detailed features of neuronal correlates of these movements in primate motor cortex. The model also reproduced qualitative spatio-temporal characteristics of movement- and force-related single neuron discharges in non-planar reaching and isometric force production tasks. The results suggest that the nervous system of the primate controls movements through a muscle-based controller that could be located in the motor cortex.
机译：协调运动是由中央电机系统传递给肌肉的下降命令产生的。尽管命令产生的效果具有肌肉力量的大小，但是不清楚命令发送的信息是否涉及运动运动学（例如位置，速度）或运动动力学（例如力，扭矩）。为了解决这个问题，我们使用了运动产生的最佳控制模型，该模型计算出运动神经元的输入，该输入适合将关节运动的肢体推向目标。该模型定量说明了猴子的平面，肩/肘伸臂运动的运动学，动力学和肌肉特性，并复制了灵长类运动皮层中这些运动的神经元相关性的详细特征。该模型还再现了非平面到达和等距力产生任务中与运动和力有关的单个神经元放电的定性时空特征。结果表明灵长类动物的神经系统通过可能位于运动皮层中的基于肌肉的控制器来控制运动。

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