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Double dissociation of function within the hippocampus: A comparison of dorsal, ventral, and complete hippocampal cytotoxic lesions

Bannerman, D. M., Yee, B. K., Good, M. A., Heupel, M. J., Iversen, S. D., Rawlins, J. N. P.·1999·Behavioral Neuroscience

Abstract

Rats with complete cytotoxic hippocampal lesions exhibited spatial memory impairments in both the water maze and elevated T maze. They were hyperactive in photocell cages; swam faster in the water maze; and were less efficient on a nonspatial, differential reinforcement of low rates (DRL) task. Performance on both spatial tasks was also impaired by selective dorsal but not ventral lesions; swim speed was increased by ventral but not dorsal lesions. Both partial lesions caused a comparable reduction in DRL efficiency, although these effects were smaller than those of complete lesions. Neither partial lesion induced hyperactivity when rats were tested in photocell cages, although both complete and ventral lesion groups showed increased activity after footshock in other studies (Richmond et al., 1999). These results demonstrate possible functional dissociations along the septotemporal axis of the hippocampus.

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Crossref · 10.1037/0735-7044.113.6.1170

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Authors
Bannerman, D. M., Yee, B. K., Good, M. A., Heupel, M. J., Iversen, S. D., & Rawlins, J. N. P.
Affiliations
University of Oxford (GB)
Venue
Behavioral Neuroscience
Published
1999
Volume
113
Issue
6
Pages
1170-1188
ISSN
  • 0735-7044 (ISSN-L)
  • 1939-0084
OpenAlex
W2037522799
Cited by
397
References
50
Citations by year
2026: 3 · 2025: 5 · 2024: 5 · 2023: 6 · 2022: 10 · 2021: 11 · 2020: 12 · 2019: 17 · 2018: 19 · 2017: 18 · 2016: 15 · 2015: 16 · 2014: 24 · 2013: 22 · 2012: 20
FWCI
5.36
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioral Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
Wellcome Trust
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
hippocampus, double dissociation, dorsal hippocampus, ventral hippocampus, cytotoxic lesions, spatial memory, water maze, elevated T-maze, hyperactivity, differential reinforcement of low rates, footshock, septotemporal axis, rats
MeSH terms
Analysis of Variance, Animals, Hippocampus, Hyperkinesis, Locomotion, Male, Microinjections, Rats, Inbred Strains, Space Perception, N-Methylaspartate, Excitatory Amino Acid Antagonists, Maze Learning, Rats

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