MEP amplitudes and values of RMT, SICI, and SAI obtained for the ECR and FCR muscles before and after probabilistic reward tasks.

Values are mean ± standard error of the mean. MEP, motor-evoked potential; ECR, extensor carpi radialis; FCR, flexor carpi radialis; RMT, resting motor threshold; SICI, short-interval intracortical inhibition; SAI, short-latency afferent inhibition.
*Differences in MEP amplitudes before and after probabilistic reward task were analyzed by paired t-tests.