Abstract
Kinematics of reaching and grasping are observed for prehension performed by the hand (natural prehension) and with a simple grasper held in the hand (remote prehension). Remote prehension is executed with a longer movement time, lower movement speed, extended deceleration phase and a relatively larger peak aperture compared to natural prehension. The kinematic changes in remote prehension are more pronounced when adults reached and grasped an object placed on a narrow than a wide base. Results suggested that the indirect and incomplete proprioception and sensorimotor integration with tool use are the main problems for movement control in remote manipulation. Implications of this study are discussed for design of tools and a safe work environment for tool use.
Get full access to this article
View all access options for this article.