Figure 2.
Task performance. A, The mean ± SEM time across subjects to stabilize the required force. B, The mean ± SEM force exerted in the target region. Circles (black) and squares (gray) indicate the blocked and random sessions, respectively, for pushing in the main study: negative x-direction (Fx). Black diamonds refer to pushing in the second study: positive y-direction (Fy) in a blocked design. Measures calculated over the final 40 trials of each condition. *p < 0.05, significant difference between the blocked and random sessions.