Stimulation of VTA DA neurons in YFP control TH::Cre+/− animals during the 5-CSRTT. A–F, Correct responses, incorrect responses, accuracy, omissions, premature responses, and latency to reward during mock and laser sessions, respectively (n = 5). Data are presented as mean ± SEM; *p < 0.025 when compared with mock stimulation session (paired samples Student's t test); # indicates a trend 0.025 < p < 0.05.