Figure 8. Responses to sucrose match responses to Suc_cue. A, Population PSTH in response to Suc for the following three groups of neurons: neurons with selective excitatory responses to Suc_cue (left, cyan); neurons with selective inhibitory responses to Suc_cue (middle, light blue); and neurons with no responses to either cue (right, gray). x-axis, Time (vertical dashed line at 0, Suc delivery); y-axis, auROC; shading around traces, SEM; horizontal dashed line, baseline auROC. B, Suc responses averaged across neurons and over 250 ms following taste delivery in the three groups of neurons outlined in A. Same color conventions as A. Error bars represent the SEM. Asterisks indicate significant differences. C, Left, Frequency histogram of responses to Suc for three groups of neurons. x-axis, auROC; y-axis, count; dark colors (i.e., dark blue, dark cyan, and dark gray), neurons with excitatory responses to Suc; light colors (i.e., light blue, light cyan, and light gray), neurons with inhibitory responses to Suc; white, neurons with no responses to Suc. Right, Top, Percentage of neurons with excitatory, inhibitory, and nonsignificant responses to Suc for each of the three groups described in A. x-axis, Subgroups; y-axis, percentage of total neurons responding to Suc. Right, Bottom, Cumulative distribution function for neurons with selective excitatory responses to Suc_cue (cyan), neurons with selective inhibitory responses to Suc_cue (light blue), neurons with no responses to either cue (gray). x-axis, auROC; y-axis, probability. Asterisks indicate significant differences. D, Representative raster plots and PSTHS for two matching neurons and a non-cue-responsive neuron. Top row, Neuron excited by Suc_cue and Suc; middle row, neuron inhibited by Suc-cue and Suc; bottom row, non-cue-responsive neuron; x-axis, time (vertical line at time 0 in Suc_cue and Q_cue rasters and PSTHs, onset of cue; vertical line at time 0 in Suc taste rasters and PSTHs, onset of Suc self-delivery); y-axis for rasters, trials; y-axis for PSTHs, firing frequency; cyan triangle, time of Suc self-delivery; gold triangle, time of Q self-delivery; cyan circle, time of Suc_cue onset.