Application of N-methyl-D-aspartate induces long-term potentiation in the medial perforant path and long-term depression in the lateral perforant path of the rat dentate gyrus in vitro.
The effect of application of N-methyl-D-aspartate (NMDA) on synaptic plasticity was studied in the medial and lateral perforant path-granule cell synapse in the outer blade of the dentate gyrus in vitro. Field excitatory post-synaptic potentials were recorded from the middle or outer molecular layer in response to stimulation of the medial or lateral perforant path. Bath perfusion of NMDA (10 microM, 5 min) resulted in induction of long-term potentiation in the medial perforant path, and induction of long-term depression in the lateral perforant path.
Rush
A M
AM
Department of Physiology, Trinity College, 2, Dublin, Ireland.
Rowan
M J
MJ
Anwyl
R
R
D000818:Animals; D002118:Calcium / Q000378:metabolism; D018891:Dentate Gyrus / Q000187:drug effects / Q000502:physiology*; D018690:Excitatory Amino Acid Agonists / Q000494:pharmacology*; D019706:Excitatory Postsynaptic Potentials / Q000187:drug effects / Q000502:physiology; D066298:In Vitro Techniques; D017774:Long-Term Potentiation / Q000187:drug effects*; D008564:Membrane Potentials / Q000187:drug effects; D016202:N-Methylaspartate / Q000494:pharmacology*; D009433:Neural Inhibition / Q000187:drug effects / Q000502:physiology*; D019580:Perforant Pathway / Q000187:drug effects / Q000502:physiology*; D051381:Rats
D018690:Excitatory Amino Acid Agonists; D016202:N-Methylaspartate; D002118:Calcium