Cappa Paolo, Clerico Andrea, Nov Oded, Porfiri Maurizio
Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, Rome, Italy ; Department of Mechanical and Aerospace Engineering, Polytechnic Institute of New York University, Brooklyn, New York, United States of America ; Movement Analysis and Robotics Laboratory (MARLab), Neurorehabilitation Division, IRCCS Children's Hospital "Bambino Gesù," Roma, Italy.
Department of Mechanical and Aerospace Engineering, Sapienza University of Rome, Rome, Italy ; Department of Mechanical and Aerospace Engineering, Polytechnic Institute of New York University, Brooklyn, New York, United States of America.
PLoS One. 2013 Dec 13;8(12):e83945. doi: 10.1371/journal.pone.0083945. eCollection 2013.
In this paper, we demonstrate that healthy adults respond differentially to the administration of force feedback and the presentation of scientific content in a virtual environment, where they interact with a low-cost haptic device. Subjects are tasked with controlling the movement of a cursor on a predefined trajectory that is superimposed on a map of New York City's Bronx Zoo. The system is characterized in terms of a suite of objective indices quantifying the subjects' dexterity in planning and generating the multijoint visuomotor tasks. We find that force feedback regulates the smoothness, accuracy, and duration of the subject's movement, whereby converging or diverging force fields influence the range of variations of the hand speed. Finally, our findings provide preliminary evidence that using educational content increases subjects' satisfaction. Improving the level of interest through the inclusion of learning elements can increase the time spent performing rehabilitation tasks and promote learning in a new context.
在本文中，我们证明了健康成年人在虚拟环境中与低成本触觉设备交互时，对力反馈的施加和科学内容的呈现会有不同的反应。受试者的任务是控制光标在叠加于纽约市布朗克斯动物园地图上的预定义轨迹上移动。该系统通过一套客观指标来表征，这些指标量化了受试者在规划和生成多关节视觉运动任务时的灵巧程度。我们发现力反馈调节受试者运动的平滑度、准确性和持续时间，由此汇聚或发散的力场会影响手部速度的变化范围。最后，我们的研究结果提供了初步证据，表明使用教育内容可提高受试者的满意度。通过纳入学习元素来提高兴趣水平，可以增加执行康复任务的时间，并促进在新环境中的学习。
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