Abstract
The relationship between top-down enhancement and suppression of sensory cortical activity and large-scale neural networks remains unclear. Functional connectivity analysis of human functional magnetic resonance imaging data revealed that visual cortical areas that selectively process relevant information are functionally connected with the frontal-parietal network, whereas those that process irrelevant information are simultaneously coupled with the default network. This indicates that sensory cortical regions are differentially and dynamically coupled with distinct networks on the basis of task goals.
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
MeSH terms
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Adolescent
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Adult
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Analysis of Variance
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Brain Mapping*
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Female
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Frontal Lobe / blood supply
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Frontal Lobe / physiology*
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Goals*
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Humans
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Image Processing, Computer-Assisted
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Magnetic Resonance Imaging / methods
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Male
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Memory, Short-Term / physiology
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Neurology / methods
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Oxygen / blood
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Parietal Lobe / blood supply
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Parietal Lobe / physiology*
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Pattern Recognition, Visual / physiology
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Photic Stimulation / methods
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Reaction Time
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Time Factors
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Visual Cortex / blood supply
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Visual Cortex / physiology*
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Visual Pathways / blood supply
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Visual Pathways / physiology
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Young Adult