BIROn - Birkbeck Institutional Research Online

    Category-based attentional guidance can operate in parallel for multiple target objects

    Jenkins, M. and Grubert, Anna and Eimer, Martin (2018) Category-based attentional guidance can operate in parallel for multiple target objects. Biological Psychology 135 (211), p. 219. ISSN 0301-0511.

    [img]
    Preview
    Text
    22224.pdf - Author's Accepted Manuscript
    Available under License Creative Commons Attribution Non-commercial No Derivatives.

    Download (862kB) | Preview

    Abstract

    The question whether the control of attention during visual search is always feature-based or can also be based on the category of objects remains unresolved. Here, we employed the N2pc component as an on-line marker for target selection processes to compare the efficiency of feature-based and category-based attentional guidance. Two successive displays containing pairs of real-world objects (line drawings of kitchen or clothing items) were separated by a 10 ms SOA. In Experiment 1, target objects were defined by their category. In Experiment 2, one specific visual object served as target (exemplar-based search). On different trials, targets appeared either in one or in both displays, and participants had to report the number of targets (one or two). Target N2pc components were larger and emerged earlier during exemplar-based search than during category-based search, demonstrating the superior efficiency of feature-based attentional guidance. On trials where target objects appeared in both displays, both targets elicited N2pc components that overlapped in time, suggesting that attention was allocated in parallel to these target objects. Critically, this was the case not only in the exemplar-based task, but also when targets were defined by their category. These results demonstrate that attention can be guided by object categories, and that this type of category-based attentional control can operate concurrently for multiple target objects.

    Metadata

    Item Type: Article
    Keyword(s) / Subject(s): visual attention, attentional control, visual search, category search, event-related brain potentials, N2pc component
    School: School of Science > Psychological Sciences
    Depositing User: Martin Eimer
    Date Deposited: 25 Apr 2018 09:50
    Last Modified: 12 Feb 2021 20:12
    URI: https://eprints.bbk.ac.uk/id/eprint/22224

    Statistics

    Downloads
    Activity Overview
    147Downloads
    92Hits

    Additional statistics are available via IRStats2.

    Archive Staff Only (login required)

    Edit/View Item Edit/View Item