Change of load center in finger's stroking manipulation

Abstract

Finger manipulation is a basic action of human in our daily lives. The measurement of finger manipulation is important to know person's behavior and support the work. When the finger touches the object, the vibration from contact point occurs. We defined the contact position as the load center in the finger contact area, and estimated finger manipulation by measuring the different speed of the transverse and longitudinal waves. When the direction of the force applied to the finger is different, load center changes between in finger's contact area. In this paper, we investigated relationship between the load center and stroking direction using the pressure measurement sheet. The result of ANOVA and multiple comparison showed a significant difference in the average load center positions.