Table 4.

Correlation between SI_1mV and MEP_{Early epoch}

		Pearson coefficient r	P value
Anodal stimulation	Sham	−0.142	0.551
	0.5 mA	−0.182	0.442
	1.0 mA	−0.474	0.035*
	1.5 mA	0.405	0.076
	2.0 mA	0.081	0.773
Cathodal stimulation	Sham	−0.032	0.900
	0.5 mA	0.354	0.150
	1.0 mA	−0.042	0.869
	1.5 mA	−0.287	0.248
	2.0 mA	−0.277	0.267

Pearson's correlation coefficient was calculated for each intensity using each subject's respective SI1mV as one variable and the grand‐averaged, normalized MEP from the early epoch (0–30 min post stimulation) as the second variable. A significant negative correlation was observed for 1.0 mA anodal stimulation only.