CIF parameter values. (a) Scatter plot of exp(βo) vs. the measured baseline firing rate with Pearson correlation coefficient ρ = 0.92. (b) Mean of eβp,J+1, with 95% confidence interval, versus a latency p up to P = 40 ms (c) Example of exponentiated βl,j values displayed according to the center frequency of the corresponding gammatone filter j and latency l (CF = 1024 Hz) with J = 25 and L = 10 ms. (d) Scatter plot of the center frequency of the filter corresponding to the βl,j with the highest value versus the measured characteristic frequency of the corresponding neuron; ρ = 0.82.