Table 2.

CCEP connectivity pattern

	Frontal stimulus sites (location of electrode pair)			CCEPAL→PL response				Consistency with fMRI (language cortex)		Consistency with diffusion tractography (the AF tract)
	IFGtr	IFGop	MFG	STG	MTG	ITG	AG/SMG	AL	PL	AL	PL
Patient 1	+			+		+	++	Yes	Yes	Yes	Yes
Patient 2	+	+		+	++		+	Yes	Yes	Yes	No
Patient 3	+	+		++	+	+		Yes	Yes	Yes	Yes
Patient 4	+			++	+			Yes	n.a.	Yes	Yes
Patient 5			+	++			+	Yes	n.a.	Yes	No
Patient 6	+	+		+	+	++		Yes	Yes	No	Yes

IFGtr = inferior frontal gyrus pars triangularis; IFGop = inferior frontal gyrus pars opecularis; MFG = middle frontal gyrus; STG = superior temporal gyrus; MTG = middle temporal gyrus; ITG = inferior temporal gyrus; AG = angular gyrus; SMG = supramarginal gyrus; AF = arcuate fasciculus; AL = anterior language area; PL = posterior language area; n.a. = not available (no fMRI activation); ++ the largest CCEP response