Information Transmission in the Auditory Brainstem Figure 13. PSD and dominant-component analyses of SACs. Panels A and B show Fourier transform amplitude of SACs displayed on Figs. 12C and 12 E, respectively, using the same color convention. Panel C exhibits a scatter plot of the frequencies of dominant components as a function of CF for a population of high-sync neurons (N = 19) and ANFs (N = 24). doi:10.1371/journal.pone.0044286.g013 Figure 14A displays CIs measured from responses to the whispered /i/ vowel of a population of high-sync neurons (filled triangles) and ANFs (red circles). CI estimates obtained from high- sync neuron responses are usually larger than those computed from ANF responses. Conversely, bandwidths of the central peak in the SACs of high-sync neurons are generally lower than those originating from ANFs’ responses (Fig. 14B). The distortion in the Figure 14. Temporal processing of the whispered /i/ vowel by high-sync neurons and ANFs. Panels A and B, respectively, display amplitudes and bandwidths of the central peaks in SACs computed from responses of cat high-sync neurons (black triangles, N = 19) and ANFs (red dots, N = 24) to the whispered /i/ sound. The results of the distortion analysis performed on the responses of high-sync neurons and ANFs are shown in panel C. doi:10.1371/journal.pone.0044286.g014 PLOS ONE | www.plosone.org 17 September 2012 | Volume 7 | Issue 9 | e44286