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首页> 外文会议>IEEE International Conference on Signal Processing >Sensorimotor Control for Manipulating A Glass of Water—Effects of Visual and Tactile Feedbacks
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Sensorimotor Control for Manipulating A Glass of Water—Effects of Visual and Tactile Feedbacks

机译：操纵一杯水的感觉运动控制—视觉和触觉反馈的影响

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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.
机译：本研究旨在在操纵一杯水时检测视觉和触觉反馈对运动学性能的影响。指示十二个健康的科目被指示到达，抓住和抬起一杯水，然后将水倒入另一个玻璃而不会溢出。两个视觉条件（视觉与非视觉）和具有不同物体的重量的两个触觉反馈（玻璃内部200ml与400ml水）。使用运动捕获系统记录手和玻璃的运动信号。操纵的运动轨迹分为三相（提升相-1P，倒入相PP并替换相位RP）。将每个相（持续时间）的持续时间和偏转角（CDA）的变化率作为参数提取。对于持续时间参数，结果表明，对于视觉或非视觉条件，抓住重与光玻璃具有显着不同的PP（P <0.05）的持续时间。 LP和PP均未在光线和重状态之间或视觉和非视觉条件之间显示任何显着差异。关于CDA参数，我们发现，对于没有视觉反馈的右手，掌握LP和PP的重玻璃显着降低CDA（P <; 0.05）;相比之下，目视反馈仅在光和重和重疾病之间仅观察到PP的CDA显着差异（P <; 0.05）。对于左手，在视觉和非视觉条件下，CDA在LP和PP中受重量的重量（P <; 0.05）。这些发现可能有助于我们更好地了解视觉和触觉对灵巧操纵的影响，并且可以促进对手感传感器缺陷的评估。

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