太さの異なる二本の棒が生み出すGestaltにより惹起されるベルベット錯触

抄録

In tactile virtual reality (VR), there is a limit to realizing the real objects’ textures only by hardware. We focus on Velvet Hand Illusion (VHI), in which a person rubs his/her hands together on either side of two wires stretched in a parallel to produce a sensation of rubbing a smooth virtual surface like velvet on the palm. We conducted a psychophysical experiment by changing the wire diameter to investigate the relationship between the smoothness of virtual surface and wire diameter, and one between the thickness of the virtual surface and wire diameter. Based on the experimental results, we newly proposed the closure factor defined by the two hands as palms together factor. Since a virtual surface doesn’t occur with only one hand in VHI, this factor is essential for the induction of VHI in tactile Gestalt, which cannot be observed in sight or hearing sensations.