Figure 9.

Firing rates of individual interneurons and multiunit activity correlate with the frequency of hippocampal LFP—population averages. A, As the mean Z-scored firing rate of the population of interneurons increases, the frequency of CA1 gamma oscillations also increases. B, Lower gamma frequencies are more likely at lower interneuron firing rates, whereas higher gamma frequencies are more likely at higher interneuron firing rates. C, D, Similar to A and B, but for multiple single unit activity of pyramidal cells. E, F, Similar to A and B, but for all multiunit activity.