Figure 4
From: Adaptive use of interaction torque during arm reaching movement from the optimal control viewpoint
Global interaction torque indexes (ITg), averaged across all subjects, and displayed for the three speed and two load conditions (with standard errors indicated by error bars).
It is visible that the ITg index increased whenever movements sped up or a load was attached to the arm. In addition, its values were always positive, thus indicating that the IT positively contributed to the NT to some extent. Note that horizontal bars with stars indicate the results of post-hoc analysis for the speed condition. One, two, three stars stand for p < 0.05, p < 0.01 and p < 0.001 respectively.
