Rich-club connectivity, diverse population coupling, and dynamical activity patterns emerging from local cortical circuits
Fig 11
Emergent precise spiking structures.
(A) Schematic of a spike triplet that is described by two inter-spike intervals. (B) The probability distribution of two inter-spike intervals from a representative neuron trio. The black square denotes the precisely repeating triplets occurring around ± 10 ms of the mode. (C) Occurrence of precisely repeating triplets peaks shortly after the start of activated states. The time from activated state (AS) onset is calculated based on the first spike of the triplet. The black, red, and green lines are the trial-averaged normalized probability density functions (PDFs) for the original data, shuffled data [14], and data dithered with different window sizes (method L in [56]), respectively. For each trial, 50 samples of 50 excitatory neurons are randomly chosen from a 10-by-50 grid-unit region (about 50-by-250 μm) to approximate the spike detection region of two neighboring shanks of silicon electrode array used in the experimental study by [14]. The results are not sensitive to the width of the rectangular sampling area. Within each sample, 50 neuron trios are randomly chosen to get the original and shuffled/dithered spike triplet counts.