We use eye movements to gain information about our visual environment; this information can indirectly be used to affect the environment. Whereas eye movements are affected by explicit rewards such as points or money, it is not clear whether the information gained by finding a hidden target has a similar reward value. Here we tested whether finding a visual target can reinforce eye movements in visual search performed in a noise background, which conforms to natural scene statistics and contains a large number of possible target locations. First we tested whether presenting the target more often in one specific quadrant would modify eye movement search behavior. Surprisingly, participants did not learn to search for the target more often in high probability areas. Presumably, participants could not learn the reward structure of the environment. In two subsequent experiments we used a gaze-contingent display to gain full control over the reinforcement schedule. The target was presented more often after saccades into a specific quadrant or a specific direction. The proportions of saccades meeting the reinforcement criteria increased considerably, and participants matched their search behavior to the relative reinforcement rates of targets. Reinforcement learning seems to serve as the mechanism to optimize search behavior with respect to the statistics of the task.


    Zugriff

    Download


    Exportieren, teilen und zitieren



    Titel :

    Visual reinforcement shapes eye movements in visual search



    Erscheinungsdatum :

    2016-01-01


    Anmerkungen:

    Journal of Vision 16(10):15 doi:10.1167/16.10.15


    Medientyp :

    Aufsatz (Zeitschrift)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch


    Schlagwörter :

    Klassifikation :

    DDC:    150 / 629




    VISUAL REINFORCEMENT NAVIGATION

    GIDEON STEIN | Europäisches Patentamt | 2019

    Freier Zugriff

    Fast Retrieval of Isolated Visual Shapes

    Super, B. J. | British Library Online Contents | 2002


    The Visual Recognition of Blurred Shapes

    Fairhurst, A. M. / Lettington, A. H. / Institute of Physics; Applied Optics Division et al. | British Library Conference Proceedings | 1994


    Small Eye-Movements and visual effciency

    West, D. C. | TIBKAT | 1971


    Eliciting visual primitives for detection of elongated shapes

    Cucchiara, R. / Piccardi, M. | British Library Online Contents | 1999