TARGET SIZE, POSITION, AND MOVEMENT DIRECTION EFFECTS ONTHE DRAG TASK PERFORMANCE OF A GAZE CONTROL DEVICE

摘要

An eye mouse is an alternative input device which can perform most of the tasks that a conventional mouse can;;it is usuallyused by disabled people. Although the usability of an eye mouse has not been investigated exhaustively, a few studies havefocused on the drag tasks of an eye mouse. This study evaluated the performance of drag tasks by an eye mouse according totarget size, position, and movement direction. Twenty-seven participants were recruited to perform drag tasks. The resultsindicated that the diagonal movement worked better than horizontal movement, which worked better than vertical movement.The upper horizontal movement worked better than the lower one. Also, the eye mouse worked better with large targets thanwith small or medium ones. The results of this study should help in designing interfaces or applications for an eye mouse.