Figure 6.

Spike raster plots for one unimodal neuron. A, Raster displays of the response of one neuron among the nine offers (indicated from “a” to “i” and related to Fig. 1B), aligned to cue onset (time 0). The spike density is shown above each raster. Shading shows the 75–750 ms analysis interval. B, Spike density curves of two offers (6 drops/4 s as delay, blue curve; middle, right in A) and 4 drops/1 s as delay (red curve; middle, top in A), illustrating the modulation of the pulse phase according to the offer.