标题：Sensorimotor Control for Manipulating A Glass of Water - Effects of Visual and Tactile Feedbacks
作者：Lin, Leitong ;Li, Ke ;Yue, Shouwei ;Tian, Xincheng ;Wei, Na
作者机构：[Lin, Leitong ;Li, Ke ] Laboratory of Motor Control and Rehabilitation, Institute of Biomedical Engineering, School of Control Science and Engineering 更多
会议名称：14th IEEE International Conference on Signal Processing, ICSP 2018
会议日期：12 August 2018 through 16 August 2018
来源：International Conference on Signal Processing Proceedings, ICSP
关键词：Grasping-lifting-pouring-replacing; Tactile feedback; Visual feedback
摘要：This study aimed to examine the effects of visual and tactile feedback on kinematic performance during manipulation of a glass of water. Twelve healthy subjects were instructed to reach, grasp and lift a glass of water, and then pour the water into another glass without spilling out. Two visual conditions (vision vs. non-vision) and two tactile feedbacks with different object's weight (200 ml vs. 400 ml water inside the glass). Kinematic signals of the hand and glass were recorded using a motion capture system. The movement trajectory of manipulation was divided into three phases (lifting phase-LP, pouring phase-PP and replacing phase-RP). The duration of each phase (Duration) and the rate of change of the deflection angle (CDA) were extracted as parameters. For Duration parameter, the results showed that grasping a heavy versus light glass had significant different Duration of PP (p < 0.05) for either vision or non-vision condition. Neither the LP nor PP showed any significant differences in Duration between the light and heavy conditions, or between the visual and non-visual conditions. About the CDA parameter, we found that for the right hand without visual feedbacks, grasping a heavy glass in both LP and PP showed significantly lower CDA than grasping a light glass (p < 0.05); by contrast, with visual feedbacks a significant difference was only observed in CDA of PP between the light and heavy conditions (p < 0.05). For the left hand, the CDA was significantly affected by weight in LP and PP under both visual and non-visual conditions (p < 0.05). These findings may help us to better understand the effects of vision and tactile sensation on dexterous manipulation and may facilitate evaluation of hand sensorimotor deficits. © 2018 IEEE.