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. Author manuscript; available in PMC: 2016 Jun 24.
Published in final edited form as: Nat Neurosci. 2012 Mar 25;15(5):769–775. doi: 10.1038/nn.3077

Figure 3.

Figure 3

Firing activity of different cell types during SWRs and theta oscillations. (a) Left, population average of peri-ripple histograms for PV (n = 23), SOM (n = 8), PV like (n = 89), non-bursting (n = 80) and pyramidal cells (n = 707). Right, distribution of ripple modulation index in the five cell groups. Higher positive indexes indicate larger increases in firing rate during ripples, whereas larger negative indexes indicate larger decreases in firing rate during ripples. The bimodal behavior of SOM neurons indicates that they represent a mixture of oriens-lacunosum moleculare (ripple activated) and bistratified (ripple suppressed) interneurons2. (b) Left, population average of theta phase histograms for PV (n = 30 cells, 30,369 spikes), SOM (n = 9 cells, 7,078 spikes), PV like (n = 98 cells, 116,616 spikes), non-bursting (n = 56 cells, 16,306 spikes) and pyramidal cells (n = 356 cells, 38,623 spikes) during control trials. Right, distribution of mean theta phases.