Cited by 81Memory and Neural MechanismsSpatial Cognition and NavigationNeurogenesis and neuroplasticity mechanisms

Study of CA1 place cell activity and exploratory behavior following spatial and nonspatial changes in the environment

Lenck-Santini, P.-P., Rivard, B., Muller, R.U., Poucet, B.·2005·Hippocampus

Abstract

Changes in the spatial arrangement or identity of objects inside a familiar environment induce reexploration. The present study looks at modifications of place cell activity during such renewed exploration. Hungry rats foraged for food in a cylinder with a salient cue card attached to the wall and with two distinct objects at fixed positions on the floor relative to each other and to the cue card. Once a set of CA1 place cells was recorded in this standard configuration, additional sessions were done after two kinds of manipulation. In the first, the two objects were rotated as a rigid set 90 degrees counterclockwise around the cylinder center while leaving the cue card in place; this was considered a spatial change. The effects of rotating the objects were different for fields near the objects (near fields) and fields far from the objects (far fields). Object rotation altered most near fields in complex ways, including remapping and cessation of firing. Near fields that remained intact after object rotation underwent unpredictable rotations that frequently departed considerably from the expected value of 90 degrees CCW. In contrast, the only change induced in far fields was a reduction of discharge rate on day 1, but not day 2, exposures of the rat to the rotated objects. The effects on both near and far fields were reversed when the objects were returned to their standard position. In the second manipulation, substitution of one of the two familiar objects with a novel object, a nonspatial change, had no detectable effect on place cell activity, regardless of field location. The sensitivity of hippocampal place cells to spatial changes but not to nonspatial changes is in agreement with earlier results showing that hippocampal lesions abolish reexploration after spatial but not after nonspatial object manipulations. The fact that reexploration is accompanied by place cell changes after spatial but not nonspatial changes reinforces the role that the hippocampus is believed to play in navigational computing and is perfectly compatible with the idea that another brain structure, likely perirhinal cortex, is responsible for object recognition.

Integrity signals

Registry

Crossref · 10.1002/hipo.20060

Cites

58 of 58 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Lenck-Santini, P.-P., Rivard, B., Muller, R. U., & Poucet, B.
Affiliations
  • University of Bristol (GB)
  • SUNY Downstate Health Sciences University (US)
  • Centre National de la Recherche Scientifique (FR)
Corresponding author
Poucet, B.
Venue
Hippocampus
Publisher
Wiley
Published
2005
Volume
15
Issue
3
Pages
356-369
ISSN
  • 1050-9631 (ISSN-L)
  • 1098-1063
OpenAlex
W2109182337
Cited by
81
References
58
Citations by year
2026: 3 · 2025: 1 · 2024: 2 · 2023: 2 · 2022: 3 · 2021: 2 · 2020: 5 · 2019: 1 · 2018: 2 · 2017: 1 · 2016: 3 · 2015: 4 · 2014: 7 · 2013: 6 · 2012: 3
FWCI
2.35
Type
journal article
Language
en
Open access
closed
Locations
  • Hippocampus (publishedVersion)
  • PubMed (publishedVersion)
  • HAL AMU (submittedVersion)
  • Bristol Research (University of Bristol) (submittedVersion)
Funders
  • National Institutes of Health (5r01ns037150-04)
  • National Institute of Neurological Disorders and Stroke (NS 20686, NS37150, R01NS020686)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Physical Sciences › Engineering › Automotive Engineering › Spatial Cognition and Navigation
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
Keywords
place cells, hippocampal CA1, re-exploration, spatial change, object rotation, remapping, perirhinal cortex, object recognition, spatial memory
MeSH terms
Action Potentials, Animals, Exploratory Behavior, Hippocampus, Male, Neurons, Neuropsychological Tests, Orientation, Photic Stimulation, Space Perception, Rats, Long-Evans, Rats

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review