Figure 7.
Coincident CB1R activation and postsynaptic depolarization trigger long-lasting suppression of evoked responses. A, Pooled data show the effect of bath application of the CB1R agonist WIN coupled to somatic depolarization. Following a WIN-induced 15% depression of EPSCs' amplitude, EX neurons were transiently depolarized (as in A). After 11 min of WIN application, AM-251 was applied for the remainder of the experiment (black circles). LTD triggered by coincident CB1R activation and postsynaptic depolarization was prevented by bath application of D-APV (white circles). B, PPR values for neurons in A. White circles represent each data point and bar graphs show their average and SEM. **p < 0.01. Ctrl., Control; Depol., depolarization.