Cited by 338Memory and Neural MechanismsNeuroscience and Neuropharmacology ResearchNeurobiology and Insect Physiology Research

Operant Reward Learning in Aplysia : Neuronal Correlates and Mechanisms

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Brembs, Björn, Lorenzetti, Fred D., Reyes, Fredy D., Baxter, Douglas A., Byrne, John H.·2002·Science

Abstract

Operant conditioning is a form of associative learning through which an animal learns about the consequences of its behavior. Here, we report an appetitive operant conditioning procedure in Aplysia that induces long-term memory. Biophysical changes that accompanied the memory were found in an identified neuron (cell B51) that is considered critical for the expression of behavior that was rewarded. Similar cellular changes in B51 were produced by contingent reinforcement of B51 with dopamine in a single-cell analog of the operant procedure. These findings allow for the detailed analysis of the cellular and molecular processes underlying operant conditioning.

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  • Aplysia californica is only capable of modifying the strength of preexisting associations between reflex-eliciting stimuli, and thus its mode of associative learning does not meet UAL condition ii.

    “For example, Aplysia californica is only capable of modifying the strength of preexisting associations between reflex-eliciting stimuli, and thus its mode of AL does not meet condition ii (see Carew et al., 1981; Hawkins et al., 1983; Brembs et al., 2002; Hawkins and Byrne, 2015 provide a review).”

    From The Transition to Minimal Consciousness through the Evolution of Associative Learning (2016) · cites this paper as Brembs et al., 2002

    The paper distinguishes learning about relations between stimuli from operant learning about the consequences of behavior (main text, p. 1). It reports that Aplysia acquired an operant memory when reinforcement was contingent on biting (main text, p. 2), contrary to the claim that it can only modify preexisting associations between reflex-eliciting stimuli. The paper does not assess UAL condition ii. (LLM, conf=0.88)

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Authors
Brembs, B., Lorenzetti, F. D., Reyes, F. D., Baxter, D. A., & Byrne, J. H.
Affiliations
Department of Neurobiology and Anatomy, W. M. Keck Center for the Neurobiology of Learning and Memory, The University of Texas–Houston Medical School, Houston, TX 77030, USA.
Corresponding author
  • Lorenzetti, Fred D.
  • Byrne, John H.
Venue
Science
Published
2002-05-31
Volume
296
Issue
5573
Pages
1706-1709
ISSN
  • 0036-8075 (ISSN-L)
  • 1095-9203
OpenAlex
W2055848231
Cited by
338
References
22
Citations by year
2026: 5 · 2025: 5 · 2024: 32 · 2023: 5 · 2022: 8 · 2021: 8 · 2020: 10 · 2019: 9 · 2018: 6 · 2017: 24 · 2016: 13 · 2015: 14 · 2014: 18 · 2013: 12 · 2012: 13
FWCI
7.34
Type
journal article
Language
en
Open access
Locations
  • Science (publishedVersion)
  • PubMed (publishedVersion)
  • University of Regensburg Publication Server (University of Regensburg) (acceptedVersion)
  • University of Regensburg Publication Server (University of Regensburg)
Funders
National Institute of Mental Health (R01MH058321, MH58321)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neurobiology and Insect Physiology Research
Keywords
operant conditioning, Aplysia, appetitive learning, long-term memory, dopamine, contingent reinforcement, associative learning
MeSH terms
Animals, Aplysia, Cells, Cultured, Conditioning, Operant, Dopamine, Eating, Electric Stimulation, Electrophysiology, Esophagus, Feeding Behavior, Food, Iontophoresis, Membrane Potentials, Memory, Nerve Net, Neuronal Plasticity, Neurons, Reinforcement, Psychology, Reward, Ganglia, Invertebrate, Patch-Clamp Techniques

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