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. 2015 Mar 27;10(3):e0122434. doi: 10.1371/journal.pone.0122434

Fig 1. Experiment design, timeline and task.

Fig 1

(A) Experiment schematic and tDCS montage. All participants completed two experimental sessions, separated by at least 5-days. Before c-tDCS or sham, right FDI MEPs at rest and left BB MEPs prior to muscle contraction were recorded using single-pulse TMS to establish baseline values. c-tDCS (1 mA) or sham was delivered to the M1 ipsilateral to the muscle contraction side for 15 min. After c-tDCS, right FDI MEPs and left BB MEPs measures were repeated. (B) An illustration of the motor task and timing of TMS. The participant was required to make discrete left elbow flexion or forearm pronation contractions in time with an auditory stimulus paced at 0.75, 1.0 or 1.25 Hz.