Skip to main content
. Author manuscript; available in PMC: 2013 Jan 1.
Published in final edited form as: IEEE Trans Neural Syst Rehabil Eng. 2011 Oct 13;20(1):31–37. doi: 10.1109/TNSRE.2011.2170856

Fig. 3.

Fig. 3

Effect of feedback, block, and cognitive task on performance variables. Panel A shows results for box displacement, Panel B for box velocity, and Panel C for difficulty ratings. Error bars show the 95% confidence interval of the mean. Statistically significant (p < 0.05) increases in box displacement and velocity and decreases in difficulty between blocks 1 and 2 were seen for amplitude modulated feedback, but not for pulse train frequency modulated feedback.