Greater glutamate availability increases potentiation.

<p>The top panel in each subfigure shows a raster plot of input spikes (red) and E cell spikes (blue). Second panels are AMPAR conductances over time. Third panels are AMPAR current open probabilities . Bottom panels are NMDAR current open probabilities . The frequency regimes are the same ( Hz. Hz). (A) . This frequency regime potentiated briefly. (B) . Input spike times are identical to (A), but greater and prolonged potentiation was seen.