Increase in low-frequency (δ, θ2) band power in Dahl Salt Sensitive (SS) compared to Brown Norway (BN) rats in the parietal association cortex (PtA) during emergence. (A) Frequencies, which were decomposed over time using a Morlet wavelet transform, show that nonstationary electroencephalogram variability was stable during a representative 30-s region of interest immediately after behavioral stimulation; (B) Spectral analysis from the same 30-s region illustrates the difference in power in the low-frequency region; (C) Summary data showing significant differences in the low-frequency range during emergence in the PtA. Induction and motor cortex data not shown. (*P ≤ 0.05 vs. BN, n = 11 for SS [shaded bars] and 12 for BN [dark bars]). EEG = electroencephalogram.