Table 1.

Baseline measurements in global cerebral blood flow (CBF) and baseline amplitude of the motor‐evoked potential (MEP) (±SD). CBF was quantified from perfusion images and calibrated against a reference proton density image using a single compartment model as previously described (see Section 2). No factor differed significantly between session and experimental group

Experiment	Experimental session	Global mean baseline CBF (ml/100 mg/min)	Baseline MEP (mV)
Anodal stimulation	Sham	58.41 ± 5.00	0.98 ± 0.15
	0.5 mA	56.82 ± 3.50	0.92 ± 0.15
	1.0 mA	58.97 ± 3.59	0.97 ± 0.17
	1.5 mA	59.38 ± 4.05	0.91 ± 0.15
	2.0 mA	58.01 ± 2.55	0.97 ± 0.21
Cathodal stimulation	Sham	60.82 ± 5.98	0.92 ± 0.13
	0.5 mA	60.24 ± 5.57	0.96 ± 0.09
	1.0 mA	59.47 ± 5.75	0.93 ± 0.11
	1.5 mA	57.78 ± 5.40	0.98 ± 0.10
	2.0 mA	59.18 ± 5.37	0.97 ± 0.16