Fig. 4: Dopamine responses exhibit similar responses with similar bids despite different reward magnitudes.
From: Dopamine neurons encode trial-by-trial subjective reward value in an auction-like task
a–c Raster plots and peri-event averages for similar bids for low, middle, and high reward magnitudes, respectively. Rasters are sorted by bid (bar to the right of rasters); different shades represent lower vs. higher reward magnitudes for each comparison (left of rasters). d, e Difference measure of normalized responses for each comparison for Monkey V and Monkey U. No significant differences with any comparison (p > 0.05, two sided Wilcoxon signed rank test; n = 41 and n = 32 for Monkeys V and U, respectively). Note that all analyses concerned only the second, value dopamine response component (gray analysis windows in (a–c)), whereas the preceding first, attentional response component varied only inconsistently.
