Cortical and Subcortical Contributions to Neuroplasticity after Repetitive Transspinal Stimulation in Humans
MEP peaks of facilitation. Waveform averages of the right TA MEPs from one representative subject tested while at rest under control conditions (test MEPs; green lines) and following paired TMS pulses (conditioned MEPs; red lines) before (a) and after (b) 40 min of transspinal stimulation. Traces show the average of 24 unconditioned and 12 conditioned MEPs, and arrows indicate the first test stimulus (S1) and second conditioning (S2) stimulus. Group conditioned TA MEPs before and after 40 min of transspinal stimulation for the same subject (c). The abscissa shows the ISI between paired TMS pulses, and the ordinate shows the conditioned MEP size (expressed as a percentage of the test MEP). Error bars indicate SE. .