Table 2.

Comparison by paired t-test of the P600 latency the low- and high-MWL conditions.

	Site	Condition	N	Mean	SD	t	p	Effect Size
								Hedges’ g	95% CI
ERPT	F3	Low-MWL	14	−44.00	72.29	−3.023	0.0098 (>0.05)	1.208	0.403~2.014
		High-MWL	14	45.00	75.02
	P4	Low-MWL	14	−20.29	39.21	−3.284	0.0059 (>0.05)	1.493	0.655~2.331
		High-MWL	14	39.00	40.20
	O1	Low-MWL	14	−8.57	18.89	−3.935	0.0017 (>0.0031)	1.462	0.628~2.296
		High-MWL	14	45.43	48.71
	O2	Low-MWL	14	−6.86	23.60	−3.067	0.0090 (>0.05)	0.750	−0.016~1.516
		High-MWL	14	38.29	42.81
ERPHEP	F3	Low-MWL	14	−8.43	21.95	−2.425	0.0306 (>0.05)	1.098	0.303~1.893
		High-MWL	14	39.57	57.79
	P4	Low-MWL	14	−4.00	30.09	−3.500	0.0039 (>0.05)	0.903	0.125~1.680
		High-MWL	14	28.43	40.93
	O2	Low-MWL	14	−1.14	31.95	−2.423	0.0308 (>0.05)	0.830	0.058~1.602
		High-MWL	14	35.00	52.62
ERPA-HEP	F3	Low-MWL	14	−24.43	35.54	−4.348	0.0008 (>0.001)	1.823	0.942~2.704
		High-MWL	14	42.86	38.24
	F4	Low-MWL	14	−13.86	26.57	−3.833	0.0021 (>0.001)	1.533	0.690~2.375
		High-MWL	14	36.14	37.71
	P4	Low-MWL	14	−11.86	33.92	−4.283	0.0009 (>0.001)	1.662	0.803~2.521
		High-MWL	14	35.14	21.18
	O1	Low-MWL	14	−7.71	14.42	−5.115	0.0002 (>0.001)	1.714	0.848~2.581
		High-MWL	14	27.57	25.28
	O2	Low-MWL	14	−3.14	19.25	−5.526	0.0001 (>0.001)	1.871	0.983~2.760
		High-MWL	14	47.00	32.64

Results are not represented when the value of p is greater than 0.05.