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dc.contributor.authorGuenther, Benjamin Aaron
dc.date.accessioned2014-03-04T03:19:58Z
dc.date.available2014-03-04T03:19:58Z
dc.date.issued2008-05
dc.identifier.otherguenther_benjamin_a_200805_ms
dc.identifier.urihttp://purl.galileo.usg.edu/uga_etd/guenther_benjamin_a_200805_ms
dc.identifier.urihttp://hdl.handle.net/10724/24621
dc.description.abstractRecent 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.
dc.languageeng
dc.publisheruga
dc.rightspublic
dc.subjectAttention
dc.subjectLocation IOR
dc.subjectObject IOR
dc.subjectParvocellular and Magnocellular Pathways
dc.subjectRamped stimulus presentation
dc.titleInfluences of abrupt vs. ramped stimulus presentation on location-based inhibition of return
dc.typeThesis
dc.description.degreeMS
dc.description.departmentPsychology
dc.description.majorPsychology
dc.description.advisorJames M. Brown
dc.description.committeeJames M. Brown
dc.description.committeeRichard L. Marsh
dc.description.committeeB. Randy Hammond


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