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首页> 外文期刊>Journal of Neurophysiology >Modulation of grasping forces during object transport.
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Modulation of grasping forces during object transport.

机译：物体运输过程中握力的调节。

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摘要

Subjects held an instrumented object in a tripod grasp and moved it in the horizontal plane in various directions. The contact forces at the digits were measured and the grip force was decomposed into 2 components: a manipulating force responsible for accelerating the object and a grasping force responsible for holding the object steady. The grasping forces increased during the movement, reaching a peak near the time of peak velocity. The grasping forces also exhibited directional tuning, but this tuning was idiosyncratic for each subject. Although the overall grip forces should be modulated with acceleration, the load force did not vary during the task. Therefore the increase in the grasping force is not required to prevent slip. Rather, it is suggested that grasping force increases during translational motion to stabilize the orientation of grasped objects.
机译：受试者将仪器放置在三脚架上，并在水平面内向各个方向移动。测量手指上的接触力，并将抓握力分解为两个分量：用于使物体加速的操纵力和用于使物体保持稳定的抓握力。在运动过程中，抓力增加，在达到峰值速度时达到峰值。抓握力也表现出方向性调整，但是这种调整对于每个对象都是特质的。尽管总抓地力应通过加速度进行调节，但在执行任务期间，负载力不会发生变化。因此，不需要增加抓握力来防止打滑。相反，建议在平移运动中增加抓握力以稳定被抓物体的方向。

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