Cited by 270Memory and Neural MechanismsNeurogenesis and neuroplasticity mechanismsNeuroscience and Neuropharmacology Research

The role of hippocampal subregions in detecting spatial novelty

Lee, Inah, Hunsaker, Michael R., Kesner, Raymond P.·2005·Behavioral Neuroscience

Abstract

Previous literature suggests that the hippocampus subserves processes associated with the encoding of novel information. To investigate the role of different subregions of the hippocampus, the authors made neurotoxic lesions in different subregions of the dorsal hippocampus (i.e., CA1, dentate gyrus [DG], or CA3) of rats, followed by tests using a spontaneous object exploration paradigm. All lesion groups explored normally an object newly introduced in a familiar location. However, when some of the familiar objects were moved to novel locations, both DG and CA3 lesion groups were severely impaired in reexploring the displaced objects, whereas the CA1 lesion group was only mildly impaired in reexploration. The results suggest that the DG-CA3 network is essential in detecting novelty for spatial, but not for individual object, information.

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Crossref · 10.1037/0735-7044.119.1.145

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Authors
Lee, I., Hunsaker, M. R., & Kesner, R. P.
Affiliations
  • Boston University (US)
  • University of Utah (US)
Venue
Behavioral Neuroscience
Published
2005
Volume
119
Issue
1
Pages
145-153
ISSN
  • 0735-7044 (ISSN-L)
  • 1939-0084
OpenAlex
W2154243350
Cited by
270
References
51
Citations by year
2026: 3 · 2025: 3 · 2024: 10 · 2023: 5 · 2022: 8 · 2021: 11 · 2020: 7 · 2019: 8 · 2018: 13 · 2017: 14 · 2016: 14 · 2015: 15 · 2014: 17 · 2013: 17 · 2012: 19
FWCI
8.57
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioral Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
hippocampal subfields, dorsal hippocampus, dentate gyrus, CA1, CA3, neurotoxic lesion, spatial memory, novel object recognition
MeSH terms
Animals, Cognition, Exploratory Behavior, Hippocampus, Male, Space Perception, Rats, Long-Evans, Rats

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