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

Fig 4. Examples of motor evoked potentials in left biceps brachii.

Fig 4

Averaged rectified typical MEP waveforms (10 trials of each) recording from left BB prior to elbow flexion or forearm pronation in c-tDCS or sham sessions of a representative participant. The gray and black traces indicate pre and post c-tDCS or sham, respectively. Slow, middle and fast indicate 0.75, 1.0 and 1.25 Hz, respectively.