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Locating and Fractionating Working Memory Using Functional Neuroimaging: Storage, Maintenance, and Executive Functions

By Alan Hartley and \u2799 Nicole K. Speer

Abstract

Working memory encompasses the short-term store of information and operations on that information. We review functional neuroimaging studies that have attempted to determine cortical areas involved in working memory functions. Current research suggests distinct systems for verbal information, visual objects, and spatial locations. Passive storage buffers appear to be located in posterior brain areas, whereas active maintenance of the information involves ventrolateral prefrontal areas. More complex, executive operations appear to recruit dorsolateral prefrontal cortex and anterior cingulate cortex. The possible involvement of reciprocal circuits including frontal cortex, basal ganglia, and thalamus is also discussed

Topics: positron emission tomography, functional magnetic resonance imagingI, method of parametric variation, aging and memory, Alzheimer\u27s Disease, cortical recruitment, failure of inhibition, Neuroscience and Neurobiology, Psychology, Social and Behavioral Sciences
Publisher: 'Wiley'
Year: 2000
DOI identifier: 10.1002/1097-0029(20001001)51:1
OAI identifier: oai:scholarship.claremont.edu:scripps_fac_pub-1032
Provided by: Scholarship@Claremont
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