Figure 10.

The direction to the predicted target position (extrapolated for 160 ms) compared with the initial finger motion direction. Both directions were measured relative to the direction from finger to the target at the end of the prediction interval. A, B, Results (for subject 1) are shown for the linear extrapolation (A) and for the curvilinear extrapolation (B). C, A comparison of the extent to which the two models account for the data; extrapolation error was defined as the difference between actual initial finger direction and its predicted direction. Results for all trials performed by the subject are depicted. In all graphs, the thick black line shows the line of best fit of a regression on the data.