Mechanisms of Perceptual Learning: Prolonged Intermixed Pre-exposure Reduces the Effectiveness of the Unique and the Common Elements

Journal article


Ballesta, S., Gordón, C., Prados, J. and Artigas, A. A 2021. Mechanisms of Perceptual Learning: Prolonged Intermixed Pre-exposure Reduces the Effectiveness of the Unique and the Common Elements. Journal of Experimental Psychology: Animal Learning and Cognition. 47 (1), pp. 36-47. https://doi.org/10.1037/xan0000279
AuthorsBallesta, S., Gordón, C., Prados, J. and Artigas, A. A
Abstract

In three experiments, rats were given intermixed or blocked preexposure to two similar compound stimuli, AX and BX. In Experiment 1, following preexposure, animals were given appetitive conditioning training with the compound AX. A subsequent generalization test showed better discrimination between AX and BX in the group given intermixed than in the one given blocked preexposure. Experiments 2 and 3 assessed the nature of the learning mechanisms underlying this instance of the perceptual learning effect. Experiment 2 assessed the associability of the common and unique elements (X and A); animals in the group given intermixed preexposure showed poorer conditioning with both the X and the A elements than those given blocked preexposure. Experiment 3 further assessed the perceptual effectiveness of the distinctive element A using a superimposition test (the capacity of A to interfere with the conditioned response commanded by an independent conditioned stimulus). The results showed, in line with the outcome of Experiment 2, that the unique element A is more salient following blocked than intermixed preexposure. These results are discussed by reference to current theories of perceptual learning.

Keywords perceptual learning; salience modulation; differential representation hypothesis
Year2021
JournalJournal of Experimental Psychology: Animal Learning and Cognition
Journal citation47 (1), pp. 36-47
PublisherAmerican Psychological Association (APA)
ISSN2329-8456
Digital Object Identifier (DOI)https://doi.org/10.1037/xan0000279
Web address (URL)https://psycnet.apa.org/doiLanding?doi=10.1037%2Fxan0000279
https://leicester.figshare.com/articles/journal_contribution/Mechanisms_of_perceptual_learning_Prolonged_intermixed_preexposure_reduces_the_effectiveness_of_the_unique_and_the_common_elements_/14743800
FunderDirect funding - Public sector
Output statusPublished
Publication dates17 Jun 2021
Publication process dates
Deposited30 Aug 2022
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