Lodge D, Johnston G A
Neurosci Lett. 1985 May 23;56(3):371-5. doi: 10.1016/0304-3940(85)90271-x.
N-Methyl-D-aspartate (NMDA), quisqualate, kainate and potassium increased, in a dose-dependent manner, the efflux of radioactivity from rat cerebral cortex minislices preincubated with [3H]choline. Ketamine (1-5 microM) and magnesium (0.1-1 mM) reduced only the release evoked by NMDA. The non-parallel shift of the NMDA dose-response curve suggests that ketamine is not acting as a competitive antagonist of NMDA.