Figure 4.

Transport and grip component coordination. To illustrate component coordination, the grip and transport measures for the H2F, H2M and F2M movements have been resampled to a duration of 100 time points (x-axis) and replotted as a percentage of maximal values on the y-axis. Reach velocity profiles are quite similar across testing conditions (H2F, H2M and F2M), reaching the peak 40–50% of the way through the movement; whereas aperture measures differ depending on reach direction (toward the food or toward the mouth). The aperture opens earlier for hand grasping than mouth biting, both when the aperture has reached 50% of its maximum (~37% vs. ~57% of movement time, respectively), and at its peak (~70% vs. ~80% of movement time, respectively).