Selective inhibition of postsynaptic glutamate uptake enhances the frequency of mIPSCs. A, Records of mIPSCs under control and in the presence of 500 μm
l-α-AA, a competitive blocker of EAAT4 glutamate transporters expressed in Purkinje neurons. B, Average enhancement of mIPSC frequency by l-α-AA, S-4-CPG, and l-α-AA in the presence of S-4-CPG (**p < 0.01 compared with control of 100%).