TC PPD of EPSCs is mediated by T-type calcium channels. a, Representative traces of TC EPSCs in response to pairs of stimuli delivered to the TR in TC slices in the presence of vehicle, mibefradil, or NNC 55-0396 (>60 min exposure). Dots represent the delivery of stimuli to the TR. b, Average PPR of EPSCs at different ISIs in the presence of vehicle, mibefradil, or NNC 55-0396. c, Representative traces of EPSCs recorded from L3/4 pyramidal neurons in the ACx in response to a pair of CC stimulations in the presence of vehicle, mibefradil, or NNC 55-0396. d, The average PPR of CC EPSCs as a function of ISI in the presence of vehicle, mibefradil, or NNC 55-0396. *p < 0.01.