FIG. 2.

Three spectrally distinct behavioral states. One hour of ECoG and the corresponding spectrogram from a sham-operated control animal. (A) Displays three ECoG traces with corresponding power spectral densities below in (B). Panel I is 1 second of ECoG recorded during exploratory behavior with a peak frequency centered at ∼7 Hz. Panel II is 1 second of ECoG recorded during immobility with peak frequency centered at ∼1 Hz. The ECoG trace in panel three has increases in power three SDs over baseline exploratory behavior in frequency bands, delta, theta, alpha, and beta. (C) Displays 1 hour of ECoG with a corresponding spectrogram in (D). Roman numerals I, II, and III in (D) mark where theta oscillations, delta oscillations, and increases in power from delta to beta-1 occurred during the hour.