Figure 1.
Stochastic firing properties of BCs in the cochlear nucleus. A–C, Representative current-clamp recording from a BC in response to ANF stimulation. A, ANF stimulation (vertical markers) at 200 Hz triggers BC spikes or EPSPs. Arrows indicate −60 mV for each trace. B, Raster plot of spike times over 25 trials, showing a sustained, but irregular, response. C, Probability of spiking for stimulation trains of different frequency. At 100 Hz, the probability of spiking (Pspike) was nearly 100% after stimulation, whereas at 333 Hz, Pspike was nearly 0%. At intermediate stimulation rates, Pspike took on intermediate values. D, Average Pspike for six experiments similar to A. On average, Pspike decreased gradually over the course of a train at all frequencies.