Marchal Crespo Laura, Reinkensmeyer David J
Department of Mechanical and Aerospace Engineering, University of California-Irvine, CA 92697, USA.
J Mot Behav. 2008 Nov;40(6):545-56. doi: 10.3200/JMBR.40.6.545-557.
Haptic guidance can improve the immediate performance of a motor task by enforcing a desired pattern of kinematics, but several studies have found that it impairs motor learning. In this study, we studied whether guidance from a robotic steering wheel can improve one's short-term learning of steering a simulated vehicle. We developed a computer algorithm that adapted the firmness of the guidance based on ongoing error. Training with "guidance-as-needed" or "fixed guidance" allowed participants to learn to steer without experiencing large errors and produced slightly better immediate retention than did training without guidance, apparently because participants were better able to learn when to initiate turns. Training with guidance-as-needed produced slightly better results than training with fixed guidance: the guidance-as-needed participants' errors were significantly smaller when guidance was removed. However, this difference quickly dissipated with more practice. We conclude that haptic guidance can benefit short-term learning of a steering-type task while also limiting performance errors during training.
触觉引导可以通过强制执行所需的运动学模式来提高运动任务的即时表现，但多项研究发现它会损害运动学习。在本研究中，我们研究了来自机器人方向盘的引导是否能改善一个人对模拟车辆转向的短期学习。我们开发了一种计算机算法，该算法根据持续的误差来调整引导的力度。使用“按需引导”或“固定引导”进行训练，能让参与者在不经历大误差的情况下学习转向，并且与无引导训练相比，即时记忆稍好，这显然是因为参与者能更好地学会何时开始转弯。按需引导训练比固定引导训练产生的结果稍好：当移除引导时，按需引导组参与者的误差显著更小。然而，随着更多练习，这种差异很快就消失了。我们得出结论，触觉引导可以有益于转向类任务的短期学习，同时也能在训练期间限制表现误差。
