Table 4.

Wilcoxon signed-rank tests of amplitude and density of SWO and vSWO for the 20 sec prior to episode onset and the 180 sec baseline (medians are reported)

Amplitude	SWO			vSWO
	180 s	20 s	W	180 s	20 s	W
Fz	1.00	1.04	103	1.00	0.99	−1
Cz	1.00	1.00	25	1.01	0.96	−39
Pz	1.00	1.02	35	1.00	0.97	−38
Density
Fz	0.99	1.23	205**	0.97	1.27	169*
Cz	0.98	1.18	201**	0.96	1.20	127°
Pz	0.99	1.12	137°	1.02	1.02	−7

^°P < 0.05,

^*P < 0.01,

^**P < 0.001