Visual illusions via neural dynamics: Wilson–Cowan-type models and the efficient representation principle
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- dc.contributor.author Bertalmío, Marcelo
- dc.contributor.author Calatroni, Luca
- dc.contributor.author Franceschi, Valentina
- dc.contributor.author Franceschiello, Benedetta
- dc.contributor.author Gómez Villa, Alexander
- dc.contributor.author Prandi, Dario
- dc.date.accessioned 2020-07-13T08:42:34Z
- dc.date.issued 2020
- dc.description.abstract We reproduce suprathreshold perception phenomena, specifically visual illusions, by Wilson–Cowan (WC)-type models of neuronal dynamics. Our findings show that the ability to replicate the illusions considered is related to how well the neural activity equations comply with the efficient representation principle. Our first contribution consists in showing that the WC equations can reproduce a number of brightness and orientation-dependent illusions. Then we formally prove that there cannot be an energy functional that the WC dynamics are minimizing. This leads us to consider an alternative, variational modeling, which has been previously employed for local histogram equalization (LHE) tasks. To adapt our model to the architecture of V1, we perform an extension that has an explicit dependence on local image orientation. Finally, we report several numerical experiments showing that LHE provides a better reproduction of visual illusions than the original WC formulation, and that its cortical extension is capable also to reproduce complex orientation-dependent illusions.en
- dc.format.mimetype application/pdf
- dc.identifier.citation Bertalmío M, Calatroni L, Franceschi V, Franceschiello B, Gomez Villa A, Prandi D. Visual illusions via neural dynamics: Wilson–Cowan-type models and the efficient representation principle. J Neurophysiol. 2020 Apr 23;123(5):1606-18. DOI: 10.1152/jn.00488.2019
- dc.identifier.doi http://dx.doi.org/10.1152/jn.00488.2019
- dc.identifier.issn 0022-3077
- dc.identifier.uri http://hdl.handle.net/10230/45106
- dc.language.iso eng
- dc.publisher American Physiological Society
- dc.relation.ispartof Journal of Neurophysiology. 2020 Apr 23;123(5):1606-18
- dc.rights © 2020 the American Physiological Society. http://dx.doi.org/10.1152/jn.00488.2019
- dc.rights.accessRights info:eu-repo/semantics/openAccess
- dc.subject.keyword Brightness perceptionen
- dc.subject.keyword Efficient representation principleen
- dc.subject.keyword Variational modelingen
- dc.subject.keyword Wilson–Cowan equationsen
- dc.title Visual illusions via neural dynamics: Wilson–Cowan-type models and the efficient representation principleen
- dc.type info:eu-repo/semantics/article
- dc.type.version info:eu-repo/semantics/acceptedVersion