Figure 1

Summation of high-frequency brain activity signal data in different EEG states and characterization of ψ and ω frequency bands. Panels A–C show the overall high-frequency brain activity signal data (dots) from 100–2000 Hz as well as the 1/f-type baseline (solid). Each spectrum is an averaged Fourier analysis of high-frequency signal (1–2000 Hz) during EEG-defined intervals of waking (A), NonREM sleep (B), and REM sleep (C). Panels D–F show the signal (dots), along with curve-fitted sum (solid), as well as the peaks corresponding to the ψ band (lower trace) and the ω band (upper trace) during periods of waking (D), NonREM sleep (E), and REM sleep (F). The data are averages of results from 3 rats.