Fig. 1.

Examples for two drawing components. Thirty seconds of drawing is shown in each box. The hand position was sampled 100 times per s (dots in the drawing). The monkey mostly drew in a counter-clockwise direction (axes are in millimeters). (a) Occurrences of the drawing component: “transitions of drawing direction from a range of 180-210° to a range of 210-240°” are marked by thicker dots. (b) Occurrences of the drawing component: “transitions of drawing velocity from a range of 20-30 cm/s to a range of 10-20 cm/sec” are marked by thicker dots.