Fig. 10.

Experiment IV. Manipulating the finger motion axis (XY vs. XZ) cannot account for the difference between frontoparallel and motion-through-depth tracking. Average CCGs are shown for XY motion tracking using XY finger motion (solid lines) and using XZ finger motion (dashed lines), where the horizontal motion CCGs are in blue, and the vertical motion CCGs are in red. The average depth CCG from experiment I is replotted in black for convenient comparison. Error clouds represent 95% confidence intervals on the data.