Figure 1.

Effects of three tDCS stimulation conditions on finger-sequence performance. The mean percentage of change in the total number of correct sequential keystrokes across all subjects (N = 16) for sham, uni-hemisphere, and dual-hemisphere tDCS. Error bars signify the standard error of the mean (SEM). Dual-hemisphere tDCS improved finger-sequence coordination for the left hand significantly more than uni-hemisphere or sham stimulation.

Vines et al. BMC Neuroscience 2008 9:103   doi:10.1186/1471-2202-9-103
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