Figure 2

Changes of mu ERD during the motor imagery of the right hand grasping something after the three types of tDCS (anodal, cathodal, and sham). a) mu ERD of each subject before and after the tDCS. Each symbol shows one subject. b) Changes of mu ERD before and after tDCS. The circles and vertical lines show the mean and standard deviation of the changes of mu ERD for each stimulation condition. *Post hoc LSD analysis showed a statistically significant difference (p < 0.05). ** Post hoc LSD analysis showed a statistically significant difference (p < 0.01).