Table 3.

ERC results for individual channels by task and stimulus modality

	Laser Stimulus	Electric Stimulus
Attention
Out	Fp1: 10/16	Fp1: 9/16
	Pz: 10/16	Fp2: 9/16
	F3: 9/16	Cz: 12/16
	C3: 10/16	C3: 10/16
	Cz: 12/16
In	O2: 9/16	T6: 10/16
	Pz: 10/16	Cz: 13/16
	Cz: 13/16	F4: 9/16
	P3: 12/16
	T4: 10/16
Total	Pz: 12/16	Fp1: 10/16
	O2: 10/16	Cz: 12/16
	Cz: 10/16	Fp2: 10/16
	C3: 13/16	C3: 13/16
Distraction
Out	C3: 12/16	C4: 12/16
	Cz: 13/16	T6: 9/16
	T6: 10/16
	Pz: 12/16
	P4: 10/16
In	Cz: 12/16	F8: 10/16
	C4: 10/16	O1: 19/16
	O2: 9/16
	P4: 10/16
	C3: 13/16
	T3: 12/16
Total	Cz: 12/16	F4: 10/16
	C3: 12/16	T6: 10/16
	T6: 10/16	C3: 12/16
	P4: 12/16	Fp1: 10/16
	Pz: 13/16	O1: 10/16

Channels with significantly larger numbers of event-related causality (ERC) pairs (1-way Wilcoxon, P = 0.01) are listed in increasing order. Ratios next to channel labels represent proportion of subjects who showed results consistent with the overall result.