Abolition of Long-Term Stability of New Hippocampal Place Cell Maps by NMDA Receptor Blockade
SciencePublished 26 June 1998
Clifford G. Kentros, Eric L. Hargreaves, Robert D. Hawkins, Eric R. Kandel, Matthew L. Shapiro, Robert V. Muller
Citations496
SJR quartileQ1
SJR score10.42
SNIP6.62
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TL;DR
The results suggest that the formation and short-term stability of firing fields in a new environment involve plasticity that is independent of NMDA receptor activation, and may be related to other NMDA-dependent processes such as long-term potentiation and spatial learning.
Abstract
Hippocampal pyramidal cells are called place cells because each cell tends to fire only when the animal is in a particular part of the environment-the cell's firing field. Acute pharmacological blockade of N-methyl-D-aspartate (NMDA) glutamate receptors was used to investigate how NMDA-based synaptic plasticity participates in the formation and maintenance of the firing fields. The results suggest that the formation and short-term stability of firing fields in a new environment involve plasticity that is independent of NMDA receptor activation. By contrast, the long-term stabilization of newly established firing fields required normal NMDA receptor function and, therefore, may be related to other NMDA-dependent processes such as long-term potentiation and spatial learning.
Keywords
Neuroscience
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