Functional Organization of Spatial and Nonspatial Working Memory Processing within the Human Lateral Frontal Cortex

The present study used functional magnetic resonance imaging to demonstrate that performance of visual spatial and visual nonspatial working memory tasks involve the same regions of the lateral prefrontal cortex when all factors unrelated to the type of stimulus material are appropriately controlled...

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Bibliographic Details
Published in:Proceedings of the National Academy of Sciences - PNAS 1998-06, Vol.95 (13), p.7721-7726
Main Authors: Owen, Adrian M., Stern, Chantal E., Look, Rodney B., Tracey, Irene, Rosen, Bruce R., Petrides, Michael
Format: Article
Language:English
Subjects:
Biological Sciences
Brain
Brain Mapping
Cerebral hemispheres
Frontal Lobe - physiology
Humans
Job performance indicators
Magnetic Resonance Imaging
Memory
Memory - physiology
Motor cortex
Neurobiology
NMR
Nuclear magnetic resonance
Photic Stimulation
Prefrontal cortex
Visual cortex
Working conditions
Working memory
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Summary:The present study used functional magnetic resonance imaging to demonstrate that performance of visual spatial and visual nonspatial working memory tasks involve the same regions of the lateral prefrontal cortex when all factors unrelated to the type of stimulus material are appropriately controlled. These results provide evidence that spatial and nonspatial working memory may not be mediated, respectively, by mid-dorsolateral and mid-ventrolateral regions of the frontal lobe, as widely assumed, and support the alternative notion that specific regions of the lateral prefrontal cortex make identical executive functional contributions to both spatial and nonspatial working memory.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.95.13.7721