Conditioned Place Preference: A Parametric Analysis Using Systemic Heroin Injections

  • Michael A. Bozarth


A series of experiments is described that explores some of the parametric aspects of place preference conditioning. Several procedures that affect classical conditioning were used, such as increasing the intensity of the unconditioned stimulus and increasing the number of conditioning trials. These manipulations had little effect on the strength of the conditioned response. Alternative explanations for the shift in place preference were also examined, and none of these factors could adequately account for the data. Although place preference is usually tested in drug-free subjects, the strongest place preference was seen when subjects were tested following injections of the conditioning drug. This suggests that the drug cue may be the most salient stimulus associated with the rewarding action of the drug, and the absence of this stimulus may limit the strength of the conditioning seen in most place preference studies.


Conditioned Place Preference Place Preference Conditioning Trial Pharmacology Biochemistry Drug Reward 
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Copyright information

© Springer-Verlag New York Inc. 1987

Authors and Affiliations

  • Michael A. Bozarth
    • 1
  1. 1.Center for Studies in Behavioral Neurobiology, Department of PsychologyConcordia UniversityMontrealCanada

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