. 2015 Apr 21;3:e907. doi: 10.7717/peerj.907

Table 3. Neuroscan versus EPOC ERP peak comparisons: passive listening.

Descriptive (n, M [lower, upper 95% confidence intervals]) and inferential (t or Z and Cohen’s d) statistics for peak (P1, N1, P2, N2) amplitude (µV) and latency (ms) measures at sties F3/AF3 and F4/AF4 for Neuroscan versus EPOC in the passive condition.

					EEG system
Tone	ERP	Measure	Electrode	n	Neuroscan	EPOC	stat.	d
Standard	P1	Amplitude	F3/AF3	18	3.44 [2.3, 4.6]	3.36 [2.1, 4.6]	−0.17^a	0.03
			F4/AF4	18	3.66 [2.7, 4.6]	3.39 [2.3, 4.5]	1.12	0.13
		Latency	F3/AF3	18	98 [89, 107]	104 [96, 112]	−3.39^a^,^***	0.31
			F4/AF4	18	99 [90, 108]	104 [95, 113]	−2.74^a^,^**	0.29
	N1	Amplitude	F3/AF3	9	−0.83 [−2.0, 0.4]	−1.00 [−2.0, 0.0]	0.6	0.11
			F4/AF4	9	−0.97 [−1.9, −0.0]	−1.10 [−2.1, −0.1]	0.52	0.09
		Latency	F3/AF3	9	122 [114, 130]	131 [122, 140]	−3.77^**	0.81
			F4/AF4	9	119] [111, 127]	128 [122, 134]	−5.54^***	0.89
	P2	Amplitude	F3/AF3	9	1.34 [−0.7, 3.4]	1.11 [−0.6, 2.8]	0.64	0.09
			F4/AF4	9	1.83 [−0.3, 4.0]	1.32 [−0.3, 2.9]	1.06	0.19
		Latency	F3/AF3	9	152 [144, 160]	162 [154, 170]	−4.63^**	0.93
			F4/AF4	9	155 [146, 164]	169 [159, 179]	−4.06^**	1.09
	N2	Amplitude	F3/AF3	18	−9.32 [−10.9, −7.7]	−8.33 [−10.0, −6.6]	−3.59^a^,^***	0.29
			F4/AF4	18	−8.80 [−10.6, −7.0]	−8.65 [−10.2, −7.1]	−0.49	0.04
		Latency	F3/AF3	18	268 [258, 278]	276 [266, 286]	−4.88^***	0.41
			F4/AF4	18	265 [256, 274]	278 [268, 288]	−4.03^***	0.63
Deviant	P1	Amplitude	F3/AF3	18	3.90 [2.4, 5.4]	3.68 [2.1, 5.2]	−0.55^a	0.07
			F4/AF4	18	3.88 [2.6, 5.2]	3.42 [1.9, 4.9]	−1.07^a	0.16
		Latency	F3/AF3	18	95 [87, 103]	103 [94, 112]	−3.59^a^,^***	0.51
			F4/AF4	18	97 [88, 106]	99 [89, 109]	−0.64	0.13
	N1	Amplitude	F3/AF3	7	−2.01 [−3.1, −0.9]	−2.14 [−3.4, −0.9]	0.36	0.09
			F4/AF4	7	−1.11 [−2.5, 0.3]	−2.51 [−3.9, −1.2]	−1.6^a	0.86
		Latency	F3/AF3	7	133 [117, 149]	131 [123, 139]	0.31	0.13
			F4/AF4	7	125 [115, 135]	124 [104, 144]	0.1	0.05
	P2	Amplitude	F3/AF3	7	1.75 [−0.4, 3.9]	0.81 [−0.8, 2.4]	0.95	0.41
			F4/AF4	7	1.38 [−1.5, 4.3]	1.27 [−0.5, 3.1]	0.11	0.04
		Latency	F3/AF3	7	160 [148, 172]	167 [155, 179]	−2.55^a^,^*	0.52
			F4/AF4	7	166 [152, 180]	163 [148, 178]	0.39	0.17
	N2	Amplitude	F3/AF3	18	−10.30 [−12.3, −8.3]	−9.57 [−11.5, −7.6]	−1.69	0.18
			F4/AF4	18	−10.10 [−11.8, −8.4]	−9.87 [−11.1, −8.6]	−0.49	0.07
		Latency	F3/AF3	18	227 [215, 239]	237 [225, 249]	−2.71^a^,^**	0.38
			F4/AF4	18	227 [215, 239]	235 [225, 245]	−2.25^a^,^*	0.33

Notes.

Wilcoxon Z.

p < .05.

^**

p < .01.

^***

p < .001.