in experiments in which the extracellular na+ concentration was varied the extended constant-field equation was adequate in predicting shifts of the nmda reversal potential recorded on varying [ na+ ] o over the range 50-150 mm , but failed to accurately predict the reversal potential of responses to nmda with 10 mm- [ ca2+ ] o and only 10 or 20 mm- [ na+ ] o .
C0949755
nmda
C0004015
nmda