EMD-based PLV analysis between CA3 and CA1 in both Con group and Mel group.

A. Examples of LFP-EMD in CA1 obtained from a normal rat. The first column illustrates the raw signals and IMFs and the second column shows the corresponding power spectra. B. The example of instantaneous phases of IMF4 (red) and band-filtered within 4 to 8 Hz (blue) signal. C. The EMD-based PLVs between CA3 and CA1 are significantly decreased in IMF4 and IMF1 in Mel group. Data represent mean ± SEM. *p<0.05 and **p<0.01 comparison between Mel group and Con group.