Cited by 530Memory and Neural MechanismsStress Responses and CortisolNeuroscience and Neuropharmacology Research

Ventral hippocampal lesions affect anxiety but not spatial learning

Bannerman, D.M, Grubb, M, Deacon, R.M.J, Yee, B.K, Feldon, J, Rawlins, J.N.P·2003·Behavioural Brain Research

Abstract

Rats with cytotoxic ventral hippocampal lesions which removed approximately 50% of the hippocampus (including dentate gyrus) starting from the temporal pole, displayed a reduction in freezing behaviour following the delivery of an unsignalled footshock in an operant chamber. This was more plausibly a result of reduced susceptibility to fear than a result of a lesion-induced increase in general motor activity. There was no consistent difference between sham and lesioned animals in spontaneous locomotor activity, or locomotion following acute or chronic treatment with amphetamine. In contrast, ventral hippocampal lesioned animals were quicker to pass from the black to the white box during a modified version of the light/dark exploration test, and were quicker to begin eating during tests of hyponeophagia. Furthermore, rats with ventral hippocampal lesions defecated less than their sham counterparts both during open field testing and in extinction sessions following contextual conditioning. In contrast to these clear lesion effects, there were no signs of any spatial learning impairment either in the watermaze or on the elevated T-maze. Taken together these results suggest that the ventral hippocampus may play a role in a brain system (or systems) associated with fear and/or anxiety, and provide further evidence for a distinct specialisation of function along the septotemporal axis of the hippocampus.

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Crossref · 10.1016/s0166-4328(02)00268-1

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Authors
Bannerman, D. M., Grubb, M., Deacon, R. M. J., Yee, B. K., Feldon, J., & Rawlins, J. N. P.
Affiliations
  • University of Oxford (GB)
  • ETH Zurich (CH)
Corresponding author
Bannerman, D.M
Venue
Behavioural Brain Research
Publisher
Elsevier BV
Published
2003-02
Volume
139
Issue
1-2
Pages
197-213
ISSN
0166-4328 (ISSN-L)
OpenAlex
W2019858347
Cited by
530
References
75
Citations by year
2026: 10 · 2025: 18 · 2024: 27 · 2023: 21 · 2022: 25 · 2021: 34 · 2020: 15 · 2019: 21 · 2018: 25 · 2017: 25 · 2016: 21 · 2015: 27 · 2014: 27 · 2013: 28 · 2012: 29
FWCI
10.61
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioural Brain Research (publishedVersion)
  • PubMed (publishedVersion)
  • Research Portal (King's College London) (submittedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Behavioral Neuroscience › Stress Responses and Cortisol
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
Keywords
ventral hippocampus, hippocampal lesions, anxiety, fear, spatial learning, freezing behavior, footshock, defecation, contextual conditioning, amphetamine, locomotor activity, dentate gyrus, septotemporal axis, rats
MeSH terms
Amphetamine, Analysis of Variance, Animals, Anxiety, Discrimination Learning, Fear, Feeding Behavior, Hippocampus, Male, Motor Activity, Space Perception, Hypokinesia, Maze Learning, Rats

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