Fundamental research on three-dimensional pointing movement in consideration of change of X-and Z-axis rotation angles

With the widespread of touch - panel interface, there are many pointing tasks that requires us to touch a target with a finger-tip. In such a situation, the touch-panel display is not necessarily installed parallel to the frontal or coronal plane. Possibly, it is installed at various locations with different installation angles in a three-dimensional space. Fitts´ law models a one-dimensional movement. The pointing movement is, in nature, three-dimensional. However, few studies have made an attempt to model pointing movements in a three-dimensional space. In order to obtain insight into three-dimensional modeling of pointing movement, it was explored how X- and Z- axis rotation angles affected the pointing time. The effects of eye dominance on pointing movement were also examined. As a result, it tended that the pointing time got shorter under some conditions of X- and Z-axis rotation especially when the movement of arm was conducted within area of the preferred hand.