large depolarizations evoked by repetitive activation of an n-methylaspartate receptor mediated synapse in the absence of mg2+ , displayed several properties similar to those of depolarization shifts evoked in the presence of gamma-aminobutyric acid antagonists , i.e . similar shape , latency , inability to follow high repetition rates and a similar voltage relation , suggesting activation of the same cellular mechanism .
C0039062
synapse
C0007634
cellular