Figure 6.

Changes in endpoint force (x-axis) from one trial to the next as a function of the kinematic error. A, The change in force from the last trial to the current trial before the start of the movement expressed as a function of the signed handpath error on the current trial. The mean change in the force was determined from −100 to −10 ms relative to the onset of the movement. The p value indicates whether the slope of the linear regression is significantly different from zero. B, The trial-by-trial change in the force before the start of movement expressed as a function of the signed handpath error on the previous trial. The mean change in the force was determined from −100 to −10 ms relative to the onset of the movement. C, The trial-by-trial change in the force during an early time in the movement plotted as a function of the error on the current trial. The change in force was determined from −10 to 130 ms relative to the onset of movement. D, The trial-by-trial change in the force during an early time in the movement plotted as a function of the error on the previous trial. The change in force was determined from −10 to 130 ms relative to the onset of movement.