Effects of kinematics and kinetics on the resulting mu and beta-ERD over the contralateral (C3) and ipsilateral (C4) motor areas. Each figure demonstrates the statistical comparisons of the relative power decrease (ERD) during the task period under the different speeds and loads conditions averaged across subjects (n=11). Statistically significant difference was confirmed between the Hold and other speed conditions. On the other hand, there were no significant difference among kinetics conditions. ***(p < 0.001), **(p < 0.01), *(p < 0.05), and n.s. (p > 0.1).