The hanger reflex is an illusion phenomenon that induces strong force perception and rotational motion, and it occurs in multiple parts of the body. A potential application of this phenomenon is in upper limb rehabilitation for patients with upper-limb paralysis involving arm rotation. However, the only upper limb movements that have been confirmed in this phenomenon are the inward and outward movements of the wrist, which limits the applicable tasks. Therefore, we attempted to apply the hanger reflex to the elbow and use it simultaneously with the wrist. This phenomenon occurs due to shear deformation of the skin, so shear deformation was presented to the skin on the elbow. When shear deformation of the skin was presented to the elbow in the same manner as in previous studies applied to the wrist, movement and force perception of pronation and supination of the elbow were confirmed. The results of an experiment in which the hanger reflex was simultaneously presented to the elbow and wrist showed that each region independently perceived motion and force.

中文翻译：

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手腕和肘部皮肤剪切变形引起的旋转运动

衣架反射是一种幻觉现象，会引起强烈的力觉和旋转运动，并且发生在身体的多个部位。这种现象的一个潜在应用是涉及手臂旋转的上肢瘫痪患者的上肢康复。然而，这种现象中唯一被证实的上肢运动是手腕的向内和向外运动，这限制了适用的任务。因此，我们尝试将悬挂反射应用到肘部，并与手腕同时使用。这种现象的发生是由于皮肤的剪切变形，因此肘部皮肤呈现剪切变形。当以与之前应用于手腕的研究相同的方式将皮肤的剪切变形呈现给肘部时，确认了肘部旋前和旋后的运动和力感知。将悬挂反射同时呈现给肘部和腕部的实验结果表明，每个区域都独立地感知运动和力。