Fig. 2.

The mean spectral coherence (black lines) between the hippocampus and agranular insular cortex in the theta (A) and gamma (B) band in each hour of recording. (C) and (D) show the spectral coherence between hippocampus and anterior cingulate cortex in theta and gamma, respectively. (E) and (F) show the spectral coherence between the cortical regions in the theta (E) and gamma (F) bands. The grey envelope in all cases illustrates the 5th and 95th percentile coherence values in each hour of recording produced from lagging each dataseries by a random amount 1000 times.