Differential Corticomotor Excitability Responses to Hypertonic Saline-Induced Muscle Pain in Forearm and Hand Muscles

Figure 4

Mean (±SEM) MEPs of the ECR muscle following hypertonic saline injection into the ECR muscle (solid bars) and FDI muscle (open bars). Neither injection of hypertonic saline into the ECR muscle nor FDI muscle significantly altered the corticomotor excitability of the ECR muscle, at any time point compared to baseline. FDI: first dorsal interosseus; TMS: transcranial magnetic stimulation; MEPs: motor-evoked potentials.