Neuronal population model of globular bushy cells covering unit-to-unit variability
Fig 4
Frequency-dependent activity of model input and output.
A: Spiking rates for tonal stimulation below 1 kHz. Dotted line shows the spiking rate being equal to the stimulus frequency. B: Spiking rates for tonal stimulation between 0 and 12 kHz. C: Coefficients of variation of the interspike intervals. Vertical dotted lines show empirical lower and upper bounds for bushy cells [30]. D: Vector strength (VS) plotted along the scale of log(1-VS). Symbols show experimentally observed phase-lockers (PhL, diamond: units with multiple peaks in their PSTH that lock to the stimulus frequency; they are 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). E: Entrainment index. Symbols show fibers recorded in the trapezoid body (TB, diamonds: most likely to be SBCs or GBCs but possibly other cell types) and histologically confirmed GBCs (filled triangle). Red and blue lines in A-E show AN and GBC model responses, respectively. The empirical data reported in [25] were used for the AN upper bound of VS (dashed purple curve in D) and data points in D-E.