Fig. 2.
Corticospinal excitability of the right primary motor cortex recorded from the left flexor carpi radialis (FCR). A: representative trace of motor-evoked potentials (MEPs) from a single participant. B: mean (±SD) MEP size for the 4 different conditions. NMrest, both hands at rest with vision of both hands blocked; Mirrorrest, both hands at rest while mirror-viewing the right hand; NMcontraction, left hand at rest while the right hand performed shortening wrist flexion contractions with vision of both hands blocked; Mirrorcontraction, left hand at rest while mirror-viewing the shortening right wrist flexion contractions. *Significantly different from corticospinal excitability in resting conditions (P < 0.001; n = 27).