PMID- 24035904 OWN - NLM STAT- MEDLINE DCOM- 20150831 LR - 20220129 IS - 1460-2199 (Electronic) IS - 1047-3211 (Print) IS - 1047-3211 (Linking) VI - 25 IP - 2 DP - 2015 Feb TI - Object-in-place associative recognition memory depends on glutamate receptor neurotransmission within two defined hippocampal-cortical circuits: a critical role for AMPA and NMDA receptors in the hippocampus, perirhinal, and prefrontal cortices. PG - 472-81 LID - 10.1093/cercor/bht245 [doi] AB - Object-in-place associative recognition memory depends on an interaction between the hippocampus (HPC), perirhinal (PRH), and medial prefrontal (mPFC) cortices, yet the contribution of glutamate receptor neurotransmission to these interactions is unknown. NMDA receptors (NMDAR) in the HPC were critical for encoding of object-in-place memory but not for single-item object recognition. Next, a disconnection procedure was used to examine the importance of "concurrent" glutamate neurotransmission in the HPC-mPFC and HPC-PRH. Contralateral unilateral infusions of NBQX (AMPAR antagonist), into the HPC-mPFC, or HPC-PRH, either before acquisition or test, impaired object-in-place performance. Thus, both circuits are necessary for encoding and retrieval. Crossed unilateral AP5 (NMDAR antagonist) infusions into the HPC-mPFC or HPC-PRH impaired encoding, but not retrieval. Specifically crossed HPC-mPFC infusions impaired both short-term (5 min) and longer term (1 h) memory while HPC-PRH infusions impaired longer term memory only. This delay-dependent effect of AP5 in the HPC-PRH on object-in-place memory, accords with its effects in the PRH, on single item object recognition memory, thereby suggesting that a single PRH synaptic plasticity mechanism underpins different recognition memory processes. Further, blocking excitatory neurotransmission in any pair of structures within the networks impaired "both" encoding and retrieval, thus object-in-place memory clearly requires network interdependency across multiple structures. CI - (c) The Author 2013. Published by Oxford University Press. FAU - Barker, Gareth Robert Issac AU - Barker GR AD - MRC Centre for Synaptic Plasticity, School of Physiology and Pharmacology, University of Bristol, Medical Sciences Building, University Walk, Bristol BS8 1TD, UK. FAU - Warburton, Elizabeth Clea AU - Warburton EC AD - MRC Centre for Synaptic Plasticity, School of Physiology and Pharmacology, University of Bristol, Medical Sciences Building, University Walk, Bristol BS8 1TD, UK. LA - eng GR - BB/E010407/1/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom GR - BB/E010407/BB_/Biotechnology and Biological Sciences Research Council/United Kingdom PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130912 PL - United States TA - Cereb Cortex JT - Cerebral cortex (New York, N.Y. : 1991) JID - 9110718 RN - 0 (Excitatory Amino Acid Antagonists) RN - 0 (Quinoxalines) RN - 0 (Receptors, AMPA) RN - 0 (Receptors, N-Methyl-D-Aspartate) RN - 118876-58-7 (2,3-dioxo-6-nitro-7-sulfamoylbenzo(f)quinoxaline) SB - IM MH - Animals MH - Association Learning/drug effects/physiology MH - Catheters, Indwelling MH - Excitatory Amino Acid Antagonists/pharmacology MH - Exploratory Behavior/drug effects/physiology MH - Hippocampus/drug effects/*physiology MH - Male MH - Neural Pathways/drug effects/physiology MH - Neuronal Plasticity MH - Neuropsychological Tests MH - Prefrontal Cortex/drug effects/*physiology MH - Quinoxalines/pharmacology MH - Rats MH - Receptors, AMPA/antagonists & inhibitors/*metabolism MH - Receptors, N-Methyl-D-Aspartate/antagonists & inhibitors/*metabolism MH - Recognition, Psychology/drug effects/*physiology MH - Temporal Lobe/drug effects/*physiology PMC - PMC4380082 OTO - NOTNLM OT - brain circuits OT - encoding OT - glutamate receptors OT - plasticity OT - retrieval EDAT- 2013/09/17 06:00 MHDA- 2015/09/01 06:00 PMCR- 2013/09/12 CRDT- 2013/09/17 06:00 PHST- 2013/09/17 06:00 [entrez] PHST- 2013/09/17 06:00 [pubmed] PHST- 2015/09/01 06:00 [medline] PHST- 2013/09/12 00:00 [pmc-release] AID - bht245 [pii] AID - 10.1093/cercor/bht245 [doi] PST - ppublish SO - Cereb Cortex. 2015 Feb;25(2):472-81. doi: 10.1093/cercor/bht245. Epub 2013 Sep 12.