Peri-DS-event time cofiring histogram

We assessed the probability that a pair of cells would cofire relative to the occurrence of a dentate spike by computing a cofiring probability for each cell pair. The probability was computed in a 6 ms-long window centered on the dentate spike peak. The co-firing probability was compared to randomly sampled events to obtain a ratio of cofiring change. Statistical validation was computed using a t test between the cofiring probabilities during DS events and randomly sampled times. The significance threshold was corrected using Bonferroni’s method.