On the validity of electric brain signal predictions based on population firing rates
Fig 5
Parameter scan for simple toy-model LFP.
A: The LFP amplitude (quantified by its standard deviation across time) for different levels of amplitude variability in single-cell kernels, and different levels of correlations between spike trains. B: Simulated absolute error, quantified by the standard deviation of the difference between the ground truth signal and the population kernel signal. C: Simulated relative error, quantified by the standard deviation of the difference between the ground truth signal and the population kernel signal (panel B), normalized by the ground truth signal amplitude (panel A). D, E: Same as in panels B and C, but predicted from theory (equation (7)). F: Difference map between results from simulations (panel B) and theory (panel D), for the absolute error. G: Difference map between results from simulations (panel C) and theory (panel E), for the relative error. Correlated spike trains were generated using MIP processes (see Methods).