1998 Volume 3 Issue 3 Pages 107-110
In virtual reality systems, which can be operated with a hand, it is necessary to provide not only visual infomation but also haptic infomation. In most conventional virtual reality systems, however, visual infomation and haptic infomation are displayed separately, which makes it difficult for humans to feel they are the same object. It is desirable if we can touch where we can see. In order to accomplish such systems, it is important to realize how humans perceive real objects. In this paper, human perceptional characteristic when visual infomation and haptic infomation are displayed simultaneously, is studied, particularly on the perception of a rotational angle of a line on a certain plane. It is found that the angle differnce between a displayed visual line and a displayed haptic line exists in order to fuse the visual and haptic sensation, and it is dependent on a rotaional angle of the displayed line. It is also revealed that the proprioception is surperior to the cutaneous sensation, and that the characteristics by a right hand and that by a left hand are similar.
