The Kanizsa triangle illusion in foraging ants

Tomoko Sakiyama, Yukio Gunji

    Research output: Contribution to journalArticle

    2 Citations (Scopus)

    Abstract

    The Kanizsa triangle, wherein three Pac-Man configurations symmetrically face inwards, is a well-known illusion. By exposing foraging ants (Lasius niger) to Kanizsa-shaped honeydew solutions, we studied the origin of this illusion. More specifically, we examined whether foraging ants showed different movement reactions to local honeydew patterns formed by nestmates. This novel phenomenon could serve as an abstract model of the Kanizsa triangle illusion under the assumption that such an illusion could arise through the sum of each agent's limited global cognitions, because each agent could not perceive the entire subjective contours. Even a subjective consciousness consists of some parts which have no identical perception and could be an illusion. We succeeded in inducing foragers to move along the sides of a Kanizsa triangle when Pac-Man-shaped inducers were introduced. Furthermore, foragers appeared to form Y-shaped trajectories when dot-shaped or inverse Kanizsa inducers were used. Based on our findings, we propose an agent-based ant model that compares modelled behaviour with experimental phenomena. Our abstract model could be used to explain such cognitive phenomena for bottom-up processes, because ants cannot perceive the given subjective contours, instead simply move along the edges.

    Original languageEnglish
    Pages (from-to)9-14
    Number of pages6
    JournalBioSystems
    Volume142-143
    DOIs
    Publication statusPublished - 2016 Apr 1

    Fingerprint

    Ants
    Foraging
    Triangle
    Cognition
    Bottom-up
    Trajectories
    Entire
    Model
    Trajectory
    Configuration
    Consciousness

    Keywords

    • Foragers
    • Kanizsa triangle illusion
    • Lasius niger
    • Lower and higher-level
    • Swarm

    ASJC Scopus subject areas

    • Biochemistry, Genetics and Molecular Biology(all)
    • Applied Mathematics
    • Modelling and Simulation
    • Statistics and Probability

    Cite this

    The Kanizsa triangle illusion in foraging ants. / Sakiyama, Tomoko; Gunji, Yukio.

    In: BioSystems, Vol. 142-143, 01.04.2016, p. 9-14.

    Research output: Contribution to journalArticle

    Sakiyama, Tomoko ; Gunji, Yukio. / The Kanizsa triangle illusion in foraging ants. In: BioSystems. 2016 ; Vol. 142-143. pp. 9-14.
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