Winges Sara A, Kundu Bornali, Soechting John F, Flanders Martha
Joint Eurohaptics Conf Symp Haptic Interfaces Virtual Environ Teleoper Syst. 2007 Mar;2007:39-43. doi: 10.1109/WHC.2007.78. Epub 2007 Apr 2.
During object manipulation, the hand and arm muscles produce internal forces on the object (grasping forces) and forces that result in external translation or rotation of the object in space (transport forces). The present study tested whether the intrinsic hand muscles are actively involved in transport as well as grasping. Intrinsic hand muscle activity increased with increasing demands for grasp stability, but also showed the timing and directional tuning patterns appropriate for actively transmitting external forces to the object, during the translational acceleration and deceleration of object transport.
在物体操作过程中，手部和手臂肌肉会对物体产生内力（抓握力）以及导致物体在空间中发生外部平移或旋转的力（运输力）。本研究测试了手部固有肌肉是否积极参与运输以及抓握过程。手部固有肌肉活动随着对抓握稳定性需求的增加而增强，而且在物体运输的平移加速和减速过程中，还呈现出适合将外力主动传递给物体的时间和方向调整模式。
