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. Author manuscript; available in PMC: 2013 Jul 1.
Published in final edited form as: IEEE Trans Neural Syst Rehabil Eng. 2012 Jul;20(4):422–431. doi: 10.1109/TNSRE.2012.2197865

Fig. 1.

Fig. 1

Schematic representation of the experimental setup. The TFS was applied between the outer ring and the middle disc of electrode (1). Electrodes (1), (2), and (3) were used for recording. Electrode (g) was the ground. A personal computer was used to control the system and store the data.