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dc.contributor.authorLockhart, Holly
dc.date.accessioned2017-09-28T13:17:42Z
dc.date.available2017-09-28T13:17:42Z
dc.identifier.urihttp://hdl.handle.net/10464/13041
dc.description.abstractIt has long been debated whether objects stored in visual short-term memory (VSTM) are maintained as discrete items or as a continuous resource. While much recent behavioral evidence has supported a continuous resource model, neurological support has lagged behind. In the current study, participants underwent fMRI while they completed a delayed-estimation task with probabilistic cues directing flexible allocation of resources across four items. Behavioural evidence replicated the finding that participants could flexibly allocate memory resources between items, contrary to discrete models of VSTM. Neural activity demonstrated that participants were maintaining multiple items on trials in which one item had a high probability of being cued, consistent with continuous resource models. Whole brain analysis revealed frontal areas play a role in controlling the flexible allocation of memory resources in response to probabilistic cues. The results suggest a mechanism of frontal top-down attentional control over the flexible allocation of memory resources.en_US
dc.language.isoengen_US
dc.publisherBrock Universityen_US
dc.subjectVisual Short-term Memoryen_US
dc.subjectfMRIen_US
dc.subjectContinuous Resourceen_US
dc.subjectAttentionen_US
dc.titleNeural mechanisms underlying the flexible and continuous allocation of visual short-term memory resources.en_US
dc.typeElectronic Thesis or Dissertationen_US
dc.degree.nameM.A. Psychologyen_US
dc.degree.levelMastersen_US
dc.contributor.departmentDepartment of Psychologyen_US
dc.degree.disciplineFaculty of Social Sciencesen_US


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