Authors
David R Vago, Adam Bevan, Raymond P Kesner
Publication date
2007/10
Journal
Hippocampus
Volume
17
Issue
10
Pages
977-987
Publisher
Wiley Subscription Services, Inc., A Wiley Company
Description
Subregional analyses of the hippocampus have suggested a selective role for the CA1 subregion in intermediate/long‐term spatial memory and consolidation, but not short‐term acquisition or encoding processes. It remains unclear how the direct cortical projection to CA1 via the perforant path (pp) contributes to these CA1‐dependent processes. It has been suggested that dopamine selectively modulates the pp projection to CA1 while having little to no effect on the Schaffer collateral (SC) projection to CA1. This series of behavioral and electrophysiological experiments takes advantage of this pharmacological dissociation to demonstrate that the direct pp inputs to CA1 are critical in CA1‐dependent intermediate‐term retention and retrieval function. Here we demonstrate that local infusion of the nonselective dopamine agonist, apomorphine (10, 15 μg), into the CA1 subregion of awake animals produces …
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