Fig. 7. (A) Velocity and (B) acceleration traces of the point of bifurcation of the tongue along the covered trajectory for the three tongue flick clusters shown in Figs 5, 6. The range of the time axis is chosen to represent the time interval that the tongue tips are visible for each of the three tongue flick clusters. The blue curve indicates forward velocity and acceleration, the red curve indicates lateral velocity and acceleration and the green curve indicates vertical velocity and acceleration.