Neuronal population model of globular bushy cells covering unit-to-unit variability
Fig 12
A: PSTHs of the AN (top, red) and GBC (bottom, blue) models driven by 500-Hz tone at 95 dB SPL (see Table 1 for the parameter values used). B-C: Level-dependent spiking rates (B) and phase-locking (C) of the same AN (red) and GBC (blue) models as in A. GBC responses to CF-tonal stimulation (dashed purple) are also shown for comparison. In A-C, the characteristic frequency (CF) of the models is 7000 Hz. Filled circles in B-C indicate the responses with which the model was further tested. D-F: CF-dependent tail-sync phase-locking of the PLN model population (D: blue curves), OnL model population (E, green curves), and the AN model (F: red curve) to 500-Hz tone at 95 dB SPL. Symbols in D and E show phase-lockers (PhL, diamond: most likely to be SBCs or GBCs but possibly other cell types), PLN units (unfilled triangle: presumed to be GBCs), and histologically confirmed GBCs (filled triangle), reported in [63]. Data points in F show empirical data of cat AN fibers [63]; different symbols correspond to different spontaneous rate (SR) categories.