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Mechanisms of perceptual learning: Prolonged intermixed preexposure reduces the effectiveness of the unique and the common elements.
journal contributionposted on 2021-06-17, 13:16 authored by Sandra Ballesta, Celia Gordon, Jose Prados, Antonio A Artigas
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. (PsycInfo Database Record (c) 2021 APA, all rights reserved)
This work was supported by a grant (Ref: PSI2019-109233GB-100) from the Spanish Ministerio de Ciencia e Innovación to the authors.
CitationJournal of Experimental Psychology: Animal Learning and Cognition, 47(1), 36–47. https://doi.org/10.1037/xan0000279
Author affiliationDepartment of Neuroscience, Psychology and Behaviour, College of Life Sciences
- AM (Accepted Manuscript)
Published inJOURNAL OF EXPERIMENTAL PSYCHOLOGY-ANIMAL LEARNING AND COGNITION
Pagination36 - 47
PublisherAmerican Psychological Association
Spatial coverageUnited States
Social SciencesScience & TechnologyLife Sciences & BiomedicinePsychology, BiologicalBehavioral SciencesPsychologyPsychology, ExperimentalZoologyperceptual learningsalience modulationdifferential representation hypothesiselemental learningconfigural learningFLAVOR-AVERSIONINHIBITORY ASSOCIATIONSSALIENCE MODULATIONLATENT INHIBITIONSTIMULUSDISCRIMINATIONACTIVATIONESPINETROLESMODEL