Figure 5. Perceived change in phantom wrist position and wrist velocity during 20 and 40% efforts for individual subjects and the group.

A shows the changes in wrist position perceived during efforts of 20 and 40% of maximum and with durations of 2 and 4 s. B shows the velocity of the perceived movements. The thick lines and circles indicate the group mean ± 95% CI (8 subjects) and the thin lines represent the mean data from each subject. Data for efforts into wrist extension (continuous lines, filled circles) and flexion (dashed lines, open circles) are shown. On average, subjects reported velocities of greater than zero for all efforts. * indicate significant differences in the change in wrist position perceived during a 20% effort vs. a 40% effort, and between a 2 s effort and 4 s effort (P < 0.05).