Table 2.
Main effects analysis from ANOVAs
| Experiment | Measurement | Factor | d.f. | F value | P value |
|---|---|---|---|---|---|
| Anodal stimulation | Baseline MEP | Session | 4 | 1.608 | 0.181 |
| SI1mV | Session | 4 | 1.508 | 0.208 | |
| MEP | Intensity | 4 | 3.25 | 0.016* | |
| MEP | Time | 4.37 | 5.603 | < 0.001* | |
| MEP | Intensity × time | 9.74 | 1.384 | 0.193 | |
| Cathodal stimulation | Baseline MEP | Session | 4 | 0.826 | 0.513 |
| SI1mV | Session | 4 | 0.683 | 0.606 | |
| MEP | Intensity | 4 | 3.135 | 0.020* | |
| MEP | Time | 3.252 | 1.790 | 0.156 | |
| MEP | Intensity × time | 7.532 | 0.792 | 0.603 |
First, a one‐way ANOVA was calculated for inter‐session differences of the average baseline motor evoked potential (MEP) amplitude as well as the TMS stimulus intensity for 1 mV amplitude (SI1mV). A two‐way repeated‐measures ANOVA was calculated for main effects of stimulation intensity and post‐stimulation time on MEP size. *Significant results (where P < 0.05). Baseline MEP and SI1mV did not significantly differ across session for either experimental group. There was a main effect of intensity for both anodal and cathodal stimulation, and a main effect of time for anodal stimulation.