E. As B, for F and G. F. Time course of the peak AMPAR-mediated synaptic response to Schaffer collateral stimulation before, during, and after the induction of mGluR-dependent LTD by PP-LFS (900 paired pulses, separated by 50 ms, at 1 Hz), in control (inactive control) and GSK3α inhibitor-treated neurons (blue). Drug treatment was for 1 hour before recording at 10 µM for all compounds. Representative traces for synaptic responses before (dark trace) and after (light trace) LTD induction are shown above the time course. Error bars represent SEM. G. Quantification of average synaptic depression from the last 5 minutes of the time course shown in F. Error bars represent SEM. No statistically significant difference was found, according to the Mann-Whitney U test. 