• Login
    View Item 
    •   Athenaeum Home
    • University of Georgia Theses and Dissertations
    • University of Georgia Theses and Dissertations
    • View Item
    •   Athenaeum Home
    • University of Georgia Theses and Dissertations
    • University of Georgia Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Influences of abrupt vs. ramped stimulus presentation on location-based inhibition of return

    Thumbnail
    Date
    2008-05
    Author
    Guenther, Benjamin Aaron
    Metadata
    Show full item record
    Abstract
    Recent work has illustrated the importance of a sensory component to inhibition of return (IOR). A recent study exploring the contributions from the parvocellular (P) and magnocellular (M) pathways to location based IOR through bottom-up sensory (target spatial frequency) and top-down attentional (objects) manipulations (Brown & Guenther, 2008) suggests conditions favoring P/ventral relative to M/dorsal processing should produce greater IOR magnitude and vice versa. To further explore the roles of the P and M pathways to IOR, the present study used a different sensory manipulation presenting cues and targets either abruptly (producing a strong M response) or ramped on and off (producing a relatively weaker M response). Greater IOR was expected to ramped targets because of the weaker M response. Less IOR was expected to abrupt targets due to a greater M response. This particular sensory manipulation by itself was unable to produce differences in IOR; however, when combined with increased P/ventral activity due to the presence of objects (2-D or 3-D) differences in IOR between abrupt and ramped conditions emerged. The results highlight the importance of sensory factors on IOR and provide an example of how they can interact with other perceptual variables to influence IOR.
    URI
    http://purl.galileo.usg.edu/uga_etd/guenther_benjamin_a_200805_ms
    http://hdl.handle.net/10724/24621
    Collections
    • University of Georgia Theses and Dissertations

    About Athenaeum | Contact Us | Send Feedback
     

     

    Browse

    All of AthenaeumCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    About Athenaeum | Contact Us | Send Feedback