Wang Hongbo, Sun Qingyu, Okamoto Shogo
Tokyo Metropolitan University, Tokyo, Japan.
University of Tokyo, Tokyo, Japan.
Iperception. 2024 Apr 11;15(2):20416695241245021. doi: 10.1177/20416695241245021. eCollection 2024 Mar-Apr.
When a human strokes the surface of an object with his/her finger, the surface shape influences the perceived softness of the object. This study introduced a curved surface softness illusion, which alters the perception of material softness. When a surface with curvature is felt by sliding a finger over it, it feels softer than a flat surface made of the same material. In contrast, a rugged surface is perceived as harder. This illusion indicates that, in addition to mechanical hardness, humans judge an object's softness based on its surface shape.
当人用手指抚摸物体表面时，表面形状会影响对物体柔软度的感知。本研究引入了一种曲面柔软度错觉，它会改变对材料柔软度的感知。当用手指在有曲率的表面上滑动触摸时，它感觉比由相同材料制成的平面更柔软。相比之下，粗糙的表面则被认为更硬。这种错觉表明，除了机械硬度外，人类还会根据物体的表面形状来判断其柔软度。
