Fig. 2.

General properties of the activity in awake and anesthetized states. In all plots, anesthetic states are: awake in red, very (V.) light in magenta, light in cyan, medium in green, and deep in blue. All error bars represent SE. A: average firing rates across units for all conditions and isoflurane levels. The period of the square-wave, white-black visual stimulation is given on the horizontal axis. Spontaneous activity in complete darkness is shown as single points at the left. B and C: average normalized log power spectral densities across units for the major frequency bands. Points from left to right show averages of δ- (0–4 Hz), θ- (4–8 Hz), α- (8–12 Hz), β- (12–30 Hz), and γ- (30–70 Hz) bands. B: power in spike trains. C: power in local field potentials.