Poisson balanced spiking networks
Fig 8
Cross- and auto-correlations for the original BSN, local Poisson and population Poisson BSN models with synaptic delay.
The top row shows average auto-correlations across both populations of neurons. The bottom row shows average cross-correlations for pairs of neurons with the same sign output weight (i.e., both positive or both negative, in purple) and for pairs of neurons with opposite-sign output weights (e.g., one positive and one negative neuron, in yellow). The original BSN network exhibits negative correlations between neurons with the same sign, and positive correlations between neurons with opposite sign. The local and Population Poisson models show the opposite pattern, which more closely resembles correlations found in neural populations in (e.g.) visual cortex.