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Related Experiment Videos

Evidence for state-dependent retrieval in conditioned place aversion

P Oberling1, B Rocha, G Di Scala

  • 1Laboratoire de Neurophysiologie et Biologie des Comportements, Centre de Neurochimie du C.N.R.S., Strasbourg, France.

Behavioral and Neural Biology
|July 1, 1993
PubMed
Summary

State-dependent retrieval (SDR) in conditioned place aversion (CPA) depends on learning stage, not just drug type. Complete SDR was seen with lithium chloride, FG 7142, and naloxone after two trials.

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Area of Science:

  • Neuroscience
  • Behavioral Pharmacology
  • Learning and Memory

Background:

  • State-dependent retrieval (SDR) describes memory retrieval being best when the internal state during retrieval matches the state during learning.
  • Conditioned place aversion (CPA) is a behavioral paradigm used to study the effects of aversive stimuli on learning and memory.

Purpose of the Study:

  • To investigate the influence of learning stage on state-dependent retrieval in the conditioned place aversion paradigm.
  • To determine if state-dependent retrieval occurs with various aversive drugs differing in neurochemical targets.

Main Methods:

  • Long-Evans male rats were used in a conditioned place aversion paradigm.
  • Three different aversive drugs (lithium chloride, FG 7142, naloxone) were administered intraperitoneally.

Related Experiment Videos

  • The number of conditioning trials was varied to assess the impact on state-dependent dissociation.

    • Main Results:

    • Complete state-dependent dissociation was observed with lithium chloride after two conditioning trials, but this effect diminished with more learning sessions.
    • Similar complete state-dependent dissociations were found with FG 7142 and naloxone following two conditioning trials.
    • The expression of SDR in CPA is not uniform and is contingent upon the specific stage of learning.

    Conclusions:

    • State-dependent retrieval in CPA is influenced by the learning phase, demonstrating a non-monotonic relationship.
    • SDR can be elicited by diverse drugs inducing CPA, irrespective of their distinct neurochemical mechanisms or aversive properties.
    • These findings contribute to understanding SDR across different behavioral paradigms.