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    Perceptual belongingness determines the direction of lightness induction depending on grouping stability and intentionality

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    Date
    2016-05-30
    Author
    Murgia, Mauro;
    Prpic, Valter;
    Santoro, Ilaria;
    Sors, Fabrizio;
    Agostini, Tiziano;
    Galmonte, Alessandra
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    Abstract
    Contrast and assimilation are two opposite perceptual phenomena deriving from the relationships among perceptual elements in a visual field. In contrast, perceptual differences are enhanced; while, in assimilation, they are decreased. Indeed, if contrast or assimilation occurs depends on various factors. Interestingly, Gestalt scientists explained both phenomena as the result of perceptual belongingness, giving rise to an intriguing paradox. Benary suggested that belongingness determines contrast; conversely, Fuchs suggested that it determines assimilation. This paradox can be related both to the grouping stability (stable/multi-stable) and to the grouping intentionality (intentional/non-intentional). In the present work we ran four experiments to test whether the contrast/assimilation outcomes depend on the above-mentioned variables. We found that, intentionality and multi-stability elicit assimilation; while, non-intentionality and stability elicit contrast.
    Description
    The file attached to this record is the author's final peer reviewed version. The Publisher's final version can be found by following the DOI link
    Citation : Murgia, M., Prpic, V., Santoro, I., Sors, F., Agostini, T. and Galmonte, A., (2016) Perceptual belongingness determines the direction of lightness induction depending on grouping stability and intentionality. Vision research, 126, pp.69-79.
    URI
    http://hdl.handle.net/2086/15108
    DOI
    http://dx.doi.org/10.1016/j.visres.2015.10.018
    Research Group : Psychology
    Research Institute : Institute for Psychological Science
    Peer Reviewed : Yes
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    • School of Applied Social Sciences [1910]

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