Figure 3.

During the resting state, sparse subsets of neurons engage in synchronous activation. (a) The fraction of neurons that were co-active during REST1 and REST2 (white dot, median; box, first and last quartiles; whiskers, minimum and maximum values; Wilcoxon signed-rank test n.s.). These fractions include all neurons that were classified as part of an ensemble in a recording, for all 13 imaging sessions conducted. (b) Distribution of the number of ensembles simultaneously detected during rest. For each of the 13 imaging sessions, we count the number of ensembles that co-existed in REST1 and in REST2. (c) Distributions of the time interval between successive SCEs over linear (i) and logarithmic scales (ii) (n = 102 REST1 SCEs; n = 147 REST2 SCEs). We took the difference between the onset time-stamp of each adjacent SCE that was part of the same ensemble.