• Login
    View Item 
    •   Repository Home
    • Brock University Publications & Manuscripts
    • Open Access Publishing Fund
    • 2019 Open Access Fund Recipients
    • View Item
    •   Repository Home
    • Brock University Publications & Manuscripts
    • Open Access Publishing Fund
    • 2019 Open Access Fund Recipients
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Electrophysiological correlates of the fexible allocation of visual working memory resources

    Thumbnail
    View/Open
    Salahub_et_al-2019-Scientific_Reports.pdf (1.167Mb)
    Date
    2019-12-19
    Author
    Salahub, Christine
    Lockhart, Holly A
    Dube, Blaire
    Al-Aidroos, Naseem
    Emrich, Stephen
    Metadata
    Show full item record
    Abstract
    Visual working memory is a brief, capacity-limited store of visual information that is involved in a large number of cognitive functions. To guide one’s behavior effectively, one must efficiently allocate these limited memory resources across memory items. Previous research has suggested that items are either stored in memory or completely blocked from memory access. However, recent behavioral work proposes that memory resources can be flexibly split across items based on their level of task importance. Here, we investigated the electrophysiological correlates of flexible resource allocation by manipulating the distribution of resources amongst systematically lateralized memory items. We examined the contralateral delay activity (CDA), a waveform typically associated with the number of items held in memory. Across three experiments, we found that, in addition to memory load, the CDA flexibly tracks memory resource allocation. This allocation occurred as early as attentional selection, as indicated by the N2pc. Additionally, CDA amplitude was better-described when fit with a continuous model predicted by load and resources together than when fit with either alone. Our findings show that electrophysiological markers of attentional selection and memory maintenance not only track memory load, but also the proportion of memory resources those items receive.
    URI
    http://hdl.handle.net/10464/14606
    Collections
    • 2019 Open Access Fund Recipients

    Brock University | Copyright © 2006-2015 
    Contact Us | Send Feedback
     

     

    Browse

    All of DSpaceCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    Brock University | Copyright © 2006-2015 
    Contact Us | Send Feedback