Figure 2.

The temporal precision of IC spike trains. A, Raster plots of the responses of an example IC cell to a 20 ms segment of speech. The top row shows the actual responses and the bottom rows show the responses after the addition of different amounts of random jitter to the spike times. For each response, the single spike information is shown. B, The single spike information for the example cell as a function of the amount of added jitter. The critical timescale at which the information is decreased to 95% of its original value I₀ is marked as τ₉₅. C, The histogram (black) and cumulative distribution function (gray) of the critical timescale τ₉₅ for our sample of IC cells. D, A scatter plot of the single spike information I₀ versus the critical time scale τ₉₅ for our sample of IC cells. The correlation coefficient between I₀ and τ₉₅ with logarithmic scaling is shown.