CTZ does not significantly alter corticostriatal and thalamostriatal EPSCs PPRs. A, B, Thalamostriatal EPSCs elicited by paired stimuli with increasing ISIs in control condition and in the presence of CTZ. C, EPSCs (holding potential, −70 mV) with an ISI of 50 ms in control and CTZ. D, Box-plot summary of PPRs at an ISI of 50 ms. E, Summary graph of PPRs recorded from medium spiny neurons plotted against ISI for thalamic stimulation in control (triangles) and CTZ (filled triangles). F, G, Corticostriatal EPSCs elicited by paired stimuli in control condition and in the presence of CTZ. H, EPSCs (holding potential, −70 mV) with an ISI of 50 ms in control and CTZ. I, Box-plot summary of PPRs at an ISI of 50 ms. J, Summary graph of PPRs recorded from medium spiny neurons plotted against ISI for cortical stimulation in control (circle) and CTZ (filled circle). Error bars indicate SEM. The asterisk indicates statistical significance.