[Action of l-DOPA and acidic amino acids on isolated neurons of spinal cord in the lamprey].

Ionic currents induced by application of L-3, 4-dihydroxyphenylalanine (L-DOPA) and acidic amino acids: L-glutamate, kainate, N-methyl-D-aspartate (NMDA) were investigated in experiments on isolated spinal cord neurons of the lamprey by means of whole-cell recording and concentration clamp methods. L-DOPA was found to activate glycine, but not excitatory amino acid receptors.