To learn motor skills using a finger in many haptic training systems, a user places his or her finger in a holder to communicate with a haptic interface. It is known that the force-detection capability at the fingertip is reduced when the user's finger is enclosed in a holder. The learning performance might therefore be impaired in training. Stochastic resonance is known to improve sensitivity at the fingertip. We thus propose a fingertip force learning method using stochastic resonance. We first examine the effect of stochastic resonance on the user haptic performance in a two-dimensional task when the fingertip is within the finger holder. The outcomes indicate that the user fingertip sensitivity increases even when the finger is placed within a holder. We next perform force learning tasks in one- and two-dimensional space. Our proposed method that combines haptic feedback and stochastic resonance is compared with the method in which only haptic feedback is provided to the user in force leaning tasks. Results obtained using the proposed method indicate that the performance outcome of the proposed method is higher than that of the comparison method. This study demonstrates the potential of the proposed method for motor learning tasks.

中文翻译：

---

通过随机共振改善触觉的二维指尖力量训练

为了在许多触觉训练系统中使用手指来学习运动技能，用户将他或她的手指放在支架中以与触觉界面进行通信。众所周知，当用户的手指被固定器包围时，指尖处的力检测能力会降低。因此，学习表现可能会在训练中受到损害。众所周知，随机共振可以提高指尖的灵敏度。因此，我们提出了一种使用随机共振的指尖力学习方法。我们首先检查当指尖在手指支架内时随机共振对二维任务中用户触觉性能的影响。结果表明，即使将手指放在支架内，用户指尖灵敏度也会增加。接下来，我们在一维和二维空间中执行力学习任务。我们提出的结合触觉反馈和随机共振的方法与在力学习任务中仅向用户提供触觉反馈的方法进行了比较。使用所提出的方法获得的结果表明，所提出的方法的性能结果高于比较方法的性能结果。这项研究证明了所提出的运动学习任务方法的潜力。