Table 2.

a. Proportion of Significant Points per Bin* by Cortical Region** for the 4.5-second Sample using the 1-18 Hz Band-pass Filter.
Start Time	Time	Frontal	Central	Parietal	Left Mastoid	Right Mastoid
−2.006	−1.730	17.63	13.93	13.43	5.52	5.94
	−1.446	20.78	15.24	15.96	3.81	4.12
	−1.162	15.46	12.01	13.70	3.59	5.29
	−0.878	16.56	14.17	12.42	5.17	4.48
	−0.594	20.29	13.82	8.60	3.46	4.77
	−0.310	17.49	10.68	11.04	2.92	6.33
	−0.026	14.16	13.87	15.55	2.92	4.51
	0.258	19.36	22.90	18.31	9.84	11.53
	0.542	25.59	25.62	19.3	15.4	14.35
	0.826	17.42	16.04	11.39	8.25	9.58
	1.110	12.08	13.30	11.38	5.21	3.99
	1.394	14.76	15.73	12.13	5.65	1.82
	1.678	14.94	20.41	19.25	7.14	5.26
	1.962	15.62	20.03	12.04	3.46	6.62
	2.246	14.30	15.98	14.95	5.11	7.05
	2.500	11.73	10.50	11.68	3.33	4.80

b. Proportion of Significant Points per Bin* by Cortical Region for the 2-second Sample using the 1-18 Hz Band-pass Filter.
Start Time	Time	Frontal	Central	Parietal	Left Mastoid	Right Mastoid
−.502	−0.230	14.90	11.72	13.05	3.8	7.08
	0.056	14.03	14.51	15.49	3.31	3.67
	0.340	23.47	24.74	17.82	15.03	17.5
	0.624	22.37	22.44	16.49	15.16	12.44
	0.908	17.05	15.81	9.25	6.75	7.27
	1.192	11.40	13.60	11.20	6.10	3.83
	1.500	15.97	16.75	15.61	5.92	2.24

Notes:

^*p < .05;

Bin sizes were defined by calculating ½ (inverse of the low pass filter setting). Using that formula, bins for the 1-18 Hz bandpass filter should encompass approximately 278 ms; however, as data were sampled at 250 Hz, bin size was adjusted to 280 ms for all bins except the last.

^**Cortical regions were defined as follows: Frontal: F5, FZ, F6; Central: C5, CZ, C6; Parietal: P5, PZ, P6