Cited by 160Memory and Neural MechanismsMemory Processes and InfluencesNeuroscience and Neuropharmacology Research

Retrograde and anterograde object recognition in rats with hippocampal lesions

Gaskin, Stephane, Tremblay, Annie, Mumby, Dave G.·2003·Hippocampus

Abstract

Retrograde and anterograde object-recognition memory was assessed in rats with cytotoxic lesions of the hippocampal formation (HPC), using a paradigm based on the natural tendency of rats to spend more time exploring novel objects than familiar objects. The rats were allowed to explore a sample object for 5 min/day on 5 consecutive days, either 5 weeks or 1 week before surgery. After surgery, retrograde recognition was assessed by comparing the amount of time spent exploring the sample versus a novel object in a free-choice situation. Control rats spent more time exploring the novel object than the sample objects from both presurgery time periods, whereas rats with HPC lesions did not discriminate between the novel objects and sample objects from either presurgery time period. Despite their deficits on the retrograde recognition test, the rats with HPC lesions performed like control rats on anterograde recognition tests, displaying a strong exploratory preference for novel objects over sample objects, with retention delays of either 15 min or 24 h. The findings suggest that extrahippocampal circuitry is capable of supporting object recognition, but only if the HPC does not participate in encoding the original encounter with the object.

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Crossref · 10.1002/hipo.10154

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Authors
Gaskin, S., Tremblay, A., & Mumby, D. G.
Affiliations
Concordia University (CA)
Corresponding author
Mumby, Dave G.
Venue
Hippocampus
Publisher
Wiley
Published
2003-01
Volume
13
Issue
8
Pages
962-969
ISSN
  • 1050-9631 (ISSN-L)
  • 1098-1063
OpenAlex
W2155791928
Cited by
160
References
42
Citations by year
2026: 3 · 2025: 2 · 2023: 4 · 2022: 4 · 2021: 4 · 2020: 7 · 2019: 4 · 2018: 6 · 2017: 2 · 2016: 6 · 2015: 11 · 2014: 9 · 2013: 15 · 2012: 10
FWCI
3.43
Type
journal article
Language
en
Open access
closed
Locations
  • Hippocampus (publishedVersion)
  • PubMed (publishedVersion)
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
object recognition memory, retrograde amnesia, anterograde amnesia, hippocampal lesions, hippocampal formation, novel object recognition, memory encoding, rats
MeSH terms
Amnesia, Retrograde, Animals, Denervation, Disease Models, Animal, Hippocampus, Male, Memory, Neural Pathways, Pattern Recognition, Visual, Reaction Time, Time Factors, Rats, Long-Evans, Amnesia, Anterograde, Recognition, Psychology, Rats

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