Supplementary information

Supplementary Figures

This file contains Supplementary Figures S1 and S2 and accompanying legends. Supplementary Figure S1 shows that EPSCs evoked by Ca²⁺-uncaging, and by brief presynaptic depolarizations are potentiated with a similar time-course by 1 M PDBu, but the potentiation is transient under conditions of presynaptic whole-cell recording. Supplementary Figure S2 shows that EPSCs evoked by brief, and by prolonged presynaptic depolarizations are potentiated differentially by 1 M PDBu, suggesting that the size of a readily-releasable vesicle pool is unchanged by PDBu. Furthermore, Ca²⁺-currents evoked by brief presynaptic depolarizations are slightly (15 %) increased by 1 M PDBu.

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