Cited by 725Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchMemory Processes and Influences

Hippocampus and trace conditioning of the rabbit's classically conditioned nictitating membrane response.

Solomon, Paul R, Vander Schaaf, Ellen R., Thompson, Richard F., Weisz, Donald J.·1986·Behavioral Neuroscience

Abstract

Rabbits received classical conditioning of the nictitating membrane response (NMR) in a trace conditioning paradigm. In this paradigm, a 250-ms tone conditioned stimulus (CS) occurs, after which there is a 500-ms period of time in which no stimuli occur (the trace interval), followed by a 100-ms air puff unconditioned stimulus (UCS). In Experiment 1, lesions of the hippocampus or cingulate/retrosplenial cortex disrupted acquisition of the long-latency or adaptive conditioned response relative to unoperated controls and animals that received neocortical lesions that spared the cingulate/retrosplenial areas. When animals with hippocampal or cingulate/retrosplenial lesions were switched to a standard delay paradigm in which the CS and UCS were contiguous in time, they acquired in about the same number of trials as naive rabbits. In a second experiment multiple-unit activity in area CA1 of the hippocampus was examined during acquisition of the trace conditioned response (CR). Three groups of animals were tested: animals that had a 500-ms trace interval (Group T-500), animals that received explicitly unpaired presentations of the CS and UCS (Group UP), and animals that underwent conditioning with a 2,000-ms trace interval (Group T-2000). Animals in Group T-500 acquired the CR in about 500 trials. Early in training, and well before any CRs occurred, there was a substantial increase in neuronal activity in the hippocampus that began during the CS and persisted through the trace interval. There was also an increase in the UCS period that modeled the amplitude-time course of the behavioral unconditioned response. Later in conditioning as CRs emerged, there was no longer neuronal bursting throughout the CS + trace period. Rather, the activity shifted to later in the trace interval and formed a model of the amplitude-time course of the behavioral CR. Activity during the UCS period was similar to that seen earlier in conditioning. Animals in Group UP showed no behavioral conditioning and no increase in neuronal activity. Animals in Group T-2000 showed no long-latency behavioral conditioning and no increase in neuronal activity. The data are discussed in terms of the role of the hippocampus in conditioning during situations in which the CS and UCS are not contiguous in time.

Integrity signals

Registry

Crossref · 10.1037/0735-7044.100.5.729

Cites

54 of 54 references verified0 citation errors · 0 not checkable

Statistics

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

Claims the paper makes

We couldn’t retrieve this paper’s full text, 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?

  • The hippocampal pallium of teleost fish is critical for the temporal dimension of associative memories required for trace classical conditioning.

    “These deficits are strikingly similar to those reported in hippocampal-lesioned mammals [216,226,227,228,229,230,231], and reveal that the hippocampal pallium of teleost fish is critical for the temporal dimension of the associative memories required for trace classical conditioning.”

    From Spatial Cognition in Teleost Fish: Strategies and Mechanisms (2021) · cites this paper as [230]

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Solomon, P. R., Vander Schaaf, E. R., Thompson, R. F., & Weisz, D. J.
Affiliations
Williams College (US)
Venue
Behavioral Neuroscience
Published
1986
Volume
100
Issue
5
Pages
729-744
ISSN
  • 0735-7044 (ISSN-L)
  • 1939-0084
OpenAlex
W1981891948
Cited by
724
References
54
Citations by year
2026: 5 · 2025: 12 · 2024: 15 · 2023: 8 · 2022: 11 · 2021: 9 · 2020: 11 · 2019: 11 · 2018: 15 · 2017: 23 · 2016: 21 · 2015: 21 · 2014: 28 · 2013: 30 · 2012: 25
FWCI
4.31
Type
journal article
Language
en
Open access
closed
Locations
  • Behavioral Neuroscience (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • National Institute of Mental Health (MH33381)
  • National Institute of Neurological Disorders and Stroke (5 F32NS 05694-03)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
hippocampus, trace conditioning, nictitating membrane response, classical conditioning, cingulate cortex, retrosplenial cortex, hippocampal lesions, trace interval, delay conditioning, air puff
MeSH terms
Animals, Brain Mapping, Cerebral Cortex, Conditioning, Classical, Conditioning, Eyelid, Gyrus Cinguli, Hippocampus, Limbic System, Nictitating Membrane, Rabbits, Sound, Touch

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