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

The DOI matches its Crossref record; 54 of the 54 references it cites were found in a registry or an index.

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
DOI 10.1037/0735-7044.100.5.729
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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.

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Metadata

Authors
Solomon, P. R., Vander Schaaf, E. R., Thompson, R. F., & Weisz, D. J.
Affiliations
Williams College (US)
Venue
Behavioral Neuroscience
Publisher
American Psychological Association (APA)
Published
1986
Volume
100
Issue
5
Pages
729-744
ISSN
  • 0735-7044 (ISSN-L)
  • 1939-0084
DOI
10.1037/0735-7044.100.5.729
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

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