The image shows a representative trace of a local field potential (LFP)recorded in the cingulate cortex (top) together with a normalized spectrogram (deviation from the mean) showing the predominant frequencies observed during the transition between a coma-like state and wakefulness. The bottom panel shows the firing rate fluctuations of a representative active aNGC neuron (high state;25 Hz & low state; 0 Hz) and a low active aNGC neuron (high state; 40 Hz & low state; 2 Hz) simultaneously recorded with LFP  as the animal emerges from anesthesia.