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Animal learning & behavior

, Volume 10, Issue 3, pp 351–357 | Cite as

Multiple hedonic memory: Memory for more than one hedonic event in rats

  • E. J. Capaldi
  • Donna R. Verry
  • Timothy M. Nawrocki
Article

Abstract

In each of two investigations, rats ran in a runway to obtain varying quantities of food pellets presented in a fixed order, such as 20-0-20. The major finding was that rats ran faster on a 0-pellet trial if that trial was followed shortly by a 20-pellet trial (e.g., 20-0-20 series) than if it was not (e.g., 20-0 series). This finding was obtained both within groups (Experiment 1) and between groups (Experiment 2), and suggested that the memory of 20 pellets arising from the first trial of the 20-0-20 series was retrieved not only on the second trial of the series, thereby signaling 0 pellets, but on the third trial as well, thereby also signaling 20 pellets. Retrieving the memory of 20 pellets on Trial 3 of the 20-0-20 series apparently resulted in that memory’s elevating speed on Trial 2 of that series.

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Copyright information

© Psychonomic Society, Inc. 1982

Authors and Affiliations

  • E. J. Capaldi
    • 1
  • Donna R. Verry
    • 1
  • Timothy M. Nawrocki
    • 1
  1. 1.Department of PsychologyPurdue UniversityWest Lafayette

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