illustrates the experimental setup. The display screen shows the 6 objects, which of one is the visual object (in the lower center) and one is the hit target (the object marked with a circle). The pen-tablet and the display screen are connected to a computer, which collects the information about the trajectories of the visual object and the actual produced movement on the tablet. Explanation of the letters and numbers inside the display screen: A: the trajectory of the visual object, B: the direct path of the visual object to the target, C: the trajectory of the actual produced line on the tablet. 1: indicates the hit-distance, 2: illustrates the time it takes to move the visual object to the hit target, 3: specifies the drift of the actual movement (C) on the basis of the trajectory of the visual object (A). There are no lines visible on the display screen during the experiment.