Fig. 8. Time trace of the covered distance of the bifurcation point during the three tongue flick clusters (1, black circles; 2, grey circles; 3, open circles) and indicating the spatial and temporal exposure of the tongue. The mean velocity (0.25 m s^–1) coincides with the overall slope of the curves. Numbering of flick clusters corresponds with Figs 5, 6, 7, 9.