Table 1.

Linear regressions of SWA, spectral power in delta and in slow delta for the 200 sec and 32 sec prior to episode onset

	SWA		Delta		Slow delta
200 sec	a	r2	a	r2	a	r2
Fz	0.004 ± 0.002	0.14*	−0.000 ± 0.009	0.00	0.025 ± 0.017	0.22
Cz	0.003 ± 0.002	0.07	−0.001 ± 0.015	0.00	0.025 ± 0.018	0.20
Pz	0.003 ± 0.002	0.06	0.014 ± 0.019	0.06	0.024 ± 0.025	0.11
32 sec	a	r2	a	r2	a	r2
Fz	0.096 ± 0.032	0.60°	0.099 ± 0.030	0.64°	0.068 ± 0.040	0.32
Cz	0.110 ± 0.023	0.79*	0.102 ± 0.023	0.77*	0.131 ± 0.031	0.75*
Pz	0.096 ± 0.020	0.79*	0.085 ± 0.020	0.75*	0.120 ± 0.028	0.76*

^°P < 0.05,

^*P < 0.01,

^**P < 0.001; a = slope of the linear regression