Figure 8.

Outcome-selectivity in both dorsomedial and dorsolateral striatum depends on the preceding stimulus. Curves in (A) and (B) show average peak-normalized firing rates (±SEM), relative to baseline, on matched forced-choice and free-choice trials, aligned on the beginning of the movement towards reward. Curves were collapsed across each neuron's preferred direction and preferred outcome (designated according to the direction and block with the highest average firing rate on forced-choice trials). Only the latter half of free-choice trials in each block, along with forced-choice trials matched for direction, outcome and position within the block, are included. Only response-selective neurons from sessions in which all conditions had at least two free-choice trials are included, resulting in 87 neurons in dorsomedial striatum and 122 neurons in dorsolateral striatum.