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Fig. 6. The 3-D trajectory of the bifurcation point (thick trace) recorded at three
different tongue flick clusters (rows 13) and for three different
views: (A) lateral, (B) frontal and (C) dorso-ventral. The thin lines show the
(calculated) position of the protruded part of the tongue axes for each
recorded frame. The arrows indicate the motion direction of the bifurcation
point. In the lateral view (A1A3), the arrow coincides with the first
flick within each of the clusters. The initial tongue flick started twice with
a downward protrusion (clusters 1 and 2) and ground contact of the tongue tips
(marked by light traces along the tongue tip trajectory) and once with an
upward protrusion (cluster 3).