Abstract
Although man has mainly acquired various information using vision and hearing, things other than required information will also be contained in the information acquired from them. Then, the method using the tactile sense as other means of communication of information is mentioned. Since the amount of information from which a tactile sense is obtained compared with vision and hearing is restricted, it is the optimum as a means to tell what to tell. The unevenness of various conditions which narrowed down the target to the tactile sense of the finger point, and changed the quality of the material, concavo- convex width, and concavo-convex height especially by this research based on the above thing is prepared, and the difference in how to feel vibration transmitted when it is traced at various speed is investigated.
