R-V Dynamics Illusion Size-Weight Illusion

Reciprocal Influence between R-V Dynamics Illusion and Size-Weight Illusion in Mixed Reality Space Yuta Kataoka, Ayumi Nishikawa, Satoshi Hashiguchi, Fumihisa Shibata, and Asako Kimura Abstract The aim of this paper is to reveal the influence that the two illusions: “R-V Dynamics Illusion” and “Size-Weight Illusion” have on each other in mixed reality space. R-V Dynamics Illusion is an illusion that affects our perception of weight by superimposing moving virtual liquid on a real object. On the other hand, “Size-Weight Illusion” is a well-known illusion that is related to the perception of weight. It is a phenomenon where we perceive small objects to be heavier than large object even if they have the same mass. In previous research, we confirmed this phenomenon under the condition where the real object and the virtual object are the same size. However, R-V Dynamics Illusion and Size-Weight Illusion happen at the same time is likely when changing the size of the virtual object. Therefore, in this research, we combine two illusions and analyze whether if they cancel each other out or occur simultaneously by subjective experiment and measuring muscle activity. As a result, we confirmed both illusions occurring at the same time, and affecting the perception of weight and muscle activity.