Fig. 3
From: Previous cocaine self-administration disrupts reward expectancy encoding in ventral striatum
Distribution of value indices for delay (a–d) and size manipulations (e–h) for control (a, b, e, f; n = 195; 6 rats) and cocaine rats (c, d, g, h; n = 103; 4 rats) in the preferred (left panels) and non-preferred direction (right panels). Delay index = short−long/short + long during the reward-epoch; size index = big−small/big + small during the reward epoch. Distributions include both forced and free-choice trials. Neural activity was taken 250 ms before reward delivery to 1 s after reward delivery. Black bars represent neurons that showed significant modulation of expected outcome (Wilcoxon, p < 0.05)
