Better grip force control by attending to the controlled object: Evidence for direct force estimation from visual motion.

ABSTRACT: Estimating forces acting between our hand and objects is essential for dexterous motor control. An earlier study suggested that vision contributes to the estimation by demonstrating changes in grip force pattern caused by delayed visual feedback. However, two possible vision-based force estimation processes, one based on hand position and another based on object motion, were both able to explain the effect. Here, to test each process, we examined how visual feedback of hand and object each contribute to grip force control during moving an object (mass) connected to the grip by a damped-spring. Although force applied to the hand could be estimated from its displacement, we did not find any improvements by the hand feedback. In contrast, we found that visual feedback of object motion signifi

SUBMITTER: Takamuku S 

PROVIDER: S-EPMC6739397 | biostudies-literature | 2019 Sep

REPOSITORIES: biostudies-literature