Distinct Roles of Dopamine Receptors in the Lateral Thalamus in a Rat Model of Decisional Impulsivity

Baseline task performance of HI, MI, and LI rats in the delay discounting task. A Percentage choice of a large reward by HI rats was lower than that of LI and MI rats as the delay of a large reward increased (group: P < 0.001; delay: P < 0.01; interaction: P < 0.01). The operating rate (B) and omissions (C) throughout all free trials did not significantly differ among the three groups (F = 0.23, P = 0.80). HI and LI rats: n = 8/group; MI rats: n = 27, ***P < 0.001 compared to HI group