Table 3.

Event correlations

Rat	DS versus KC		DS versus LVS		DS versus HVS		KC versus LVS		KC versus HVS		LVS versus HVS
	r2	p	r2	p	r2	p	r2	p	r2	p	r2	p
1	0.58	0	0.55	0	0.08	<0.01	0.76	0	0.17	0	0.14	<0.01
2	0.35	0	0.36	0	0.08	0.03	0.35	0	0.04	0.24	0.10	0.02
3	0.49	0	0.61	0	0.02	0.02	0.69	0	0.10	0	0.08	0

For each rat (rows), the coefficient of determination (r²) and the p value (significance: p < 0.05) for the correlation between each of the measures [down states (DS), K-complexes (KC), LVSs, and HVSs] are shown (p is zero to MATLAB precision). For all rats, all of the measures are significantly correlated with each other, with the exception of the K-complexes and the high-voltage spindles in rat 2.