Figure 5.

Box plot of the mean success ratio and standard deviation of the examined conditions. In (A), the first 20 trials of each block were used whereas in (B), the analysis was carried out on the last 20 trials. Data from the last seven blocks of the PD conditions were used. All differences are significant (p < 0.0001) unless stated otherwise (ns, non-significant). The horizontal dotted line represents chance level. For all conditions except PD33, PD66, noD2, and no Efference, differences within conditions between the first and last 20 trials are significant. NoSF stands for the condition without spontaneous firing of the GPi/SNr output nuclei and noLI for the condition without lateral inhibition in striatum. PD16, PD33, and PD66 display the results of the seven blocks following the deletion of, respectively, 16, 33, and 66% of the dopaminergic neurons.