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Corticomotor excitability during imagery of a painting. (A) In one sequence (REST), the participants were instructed to relax. In a second video (IMAGERY), participants were asked to imagine the painting. (B) Painting observation increased motor evoked potentials (MEP) size and (C) reduced the amount of short-interval intracortical inhibition. (Mean ± SE) * = p < 0.01.
