Figure 4.

Ripple waveform varies by cell‐type activity and spike timing relative to the SWR event. (A) Top: mean ± 95% confidence intervals of broadband SWRs grouped by putative principal cells' spike‐timing into preripple, ripple, PRW, and null. Blackline connecting dots in the lower left inset of top panel indicates p < .05 between groups, as represented by dot color, for respective ripple feature. Bottom: probability density histogram of spike counts in a ± 200 ms window centered around the maximum ripple amplitude for putative principal units. The ripple window membership (pre, ripple, post) is indicated by the color of the histogram bar. (b) as in (a) but for nonbursting low‐firing rate units; (c) for bursting high‐firing rate, and (d) for putative interneuron units