(A) Probability distributions of λnorm = λ/λavg (left) and distribution of normalized quiescent time intervals, IBInorm = IBI/IBIavg, (right) in the AW state for a single neuronal group of PNs (Δt = 250 ms). Gray: distributions for individual ROIs, black: average. Dotted lines, λnorm = 1 and IBInorm = 1. The arrow is pointing at the relatively high-probability function value for λnorm << 1, that is, no spike within Δt = 250 ms. Note that the transition from ‘no spike’ to spiking is rather abrupt in the distribution, which indicates the high signal-to-noise ratio in our recorded data (cf. Figure 1—figure supplement 1A,B). (B) Average λnorm distributions over all PN groups for all three conditions (left; AW; WK, waking; AN, anesthetized) and temporal resolutions (right). Inset: probability of quiescence Pq (number of recordings is indicated in parentheses). (C) Distribution of IBInorm for all three conditions (left) and temporal resolutions (right). Inset: Coefficient of variation (CV) for IBI (*p < 0.05). (D) Average autocorrelation function for λ across PNs for all three conditions (left; Δt = 250 ms) and temporal resolutions (right). Inset: Power-law exponent β (*p < 0.05). Note steeper power-law decay for AW indicating increased temporal clustering. (E) Distribution of pairwise crosscorrelation, R, in λ for all PN groups and different states. Broken lines: Corresponding independent model by shuffling λ for each ROI. (F) AW shows steeper distance decay in R when compared to AN indicating higher spatial clustering.