Network parameters and response.

Using the parameters from [41] as a reference point, we set and and vary one parameter at a time. We then compute the minimum perturbation needed to force the network firing rates out of . Values such as FEP, where P ∈ {lgn, L6, amb}, represent the total number of spikes per second received by an E-cell in L4 from source P. For example, in the reference set, each L4 cell has 4 afferent LGN cells on average, the mean firing rate of each is assumed to be 20 spikes/s, so FElgn = 80 Hz. Column 5 gives the lower and upper bounds of single-parameter variation (rounded to the nearest 1%) from the reference point that yield firing rates within .