CF synaptic vesicles in Z+ and Z− zones contain a similar amount of glutamate. A, CF-induced mEPSCs recorded in the presence of SrCl2 (Vm = −70 mV). B, C, Average amplitude (Z+: 17,792 events, n = 10; Z−: 6705 events, n = 9) and decay time (tau decay; Z+: 5520 events, n = 10; Z−: 1731 events, n = 8) of CF-evoked mEPSCs from Z+ and Z− Purkinje cells (mean ± SEM). The inset shows averaged scaled CF mEPSCs from representative Z+ (gray) and Z− (black) Purkinje cells.