On the validity of electric brain signal predictions based on population firing rates
Fig 8
Comparison of how different parameter configurations affect LFP amplitude and population kernel errors.
For uncorrelated Poisson input with a rate of 10 s−1 (see Methods), the figure shows the standard deviation of the LFP at different depths (column 1), and the absolute (column 2) and relative error (column 3) from using the population kernel, for different modifications of the original parameter set (“default”). Each row corresponds to varying a certain feature, see Methods and Table 1 for full description of different parameter configurations. A: Three different synaptic input regions, that is, apical dendrites, basal dendrites (“default”), or uniformly distributed over the whole cell. B: Three different numbers of postsynaptic targets Kout (outdegree), including half and double of the default value of 500. C: Three different levels of variability of synaptic parameters, including half and double the parameter values used for controlling the variability of the synaptic time constants, the synaptic delays, and the synaptic weights. D: Three different standard deviations of the normal distribution used when drawing synaptic locations, including half and double the default value of 100 μm. E: Three different radii, including half and double the default radius of 250μm.