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  Dissecting spatial knowledge from spatial choice by hippocampal NMDA receptor deletion

Bannerman, D. M., Bus, T., Taylor, A., Sanderson, D. J., Schwarz, I., Jensen, V., et al. (2012). Dissecting spatial knowledge from spatial choice by hippocampal NMDA receptor deletion. Nature Neuroscience, 15(8), 1153-1159. doi:10.1038/nn.3166.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-1058-A Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0024-1059-8
Genre: Journal Article
Alternative Title : Dissecting spatial knowledge from spatial choice by hippocampal NMDA receptor deletion

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 Creators:
Bannerman, David M., Author
Bus, Thorsten1, Author              
Taylor, Amy, Author
Sanderson, David J., Author
Schwarz, Inna2, Author              
Jensen, Vidar, Author
Hvalby, Øivind, Author
Rawlins, J. Nicholas P., Author
Seeburg, Peter H.2, Author              
Sprengel, Rolf2, Author              
Affiliations:
1Max Planck Research Group Behavioural Neurophysiology (Andreas T. Schaefer), Max Planck Institute for Medical Research, Max Planck Society, ou_1497722              
2Department of Molecular Neurobiology, Max Planck Institute for Medical Research, Max Planck Society, ou_1497704              

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 Abstract: Hippocampal NMDA receptors (NMDARs) and NMDAR−dependent synaptic plasticity are widely considered crucial substrates of long−term spatial memory, although their precise role remains uncertain. Here we show that Grin1ΔDGCA1 mice, lacking GluN1 and hence NMDARs in all dentate gyrus and dorsal CA1 principal cells, acquired the spatial reference memory water maze task as well as controls, despite impairments on the spatial reference memory radial maze task. When we ran a spatial discrimination water maze task using two visually identical beacons, Grin1ΔDGCA1 mice were impaired at using spatial information to inhibit selecting the decoy beacon, despite knowing the platform's actual spatial location. This failure could suffice to impair radial maze performance despite spatial memory itself being normal. Thus, these hippocampal NMDARs are not essential for encoding or storing long−term, associative spatial memories. Instead, we demonstrate an important function of the hippocampus in using spatial knowledge to select between alternative responses that arise from competing or overlapping memories

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Language(s): eng - English
 Dates: 2012-02-212012-06-252012-07-152012-07-15
 Publication Status: Published in print
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 Rev. Method: Peer
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Title: Nature Neuroscience
  Other : Nat. Neurosci.
Source Genre: Journal
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Publ. Info: New York, NY : Nature America Inc.
Pages: - Volume / Issue: 15 (8) Sequence Number: - Start / End Page: 1153 - 1159 Identifier: ISSN: 1097-6256
CoNE: /journals/resource/954925610931