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. Author manuscript; available in PMC: 2013 Sep 20.
Published in final edited form as: Neuron. 2012 Sep 20;75(6):1001–1007. doi: 10.1016/j.neuron.2012.08.015

Figure 2. Excitability Changes within Non-REM Episodes Are Opposite to Those across Sleep.

Figure 2

(A) Time-normalized power spectra of adjacent non-REMn-REM-non-REMn+1 episodes (mean of n = 45 non-REMn-REM-non-REMn+1 cycles) and corresponding firing rates (±SEM) of pyramidal cells and interneurons shown within thirds of non-REM and REM episodes. Note that firing rates increase within non-REM episodes and decrease within REM episodes (Figure S2). Horizontal lines represent mean rates at the beginning of the non-REMn-REM-non-REMn+1 cycle. (B) Incidence of LFP high-frequency activity and inactivity epochs, percentage of ripples in which pyramidal cells participate, and pairwise correlation of pyramidal cells across thirds of non-REM. Note opposite changes as those observed across sleep (Figure 1). *p < 0.05; **p < 0.005; ***p < 0.0005.