Abstract
Mechanisms of selective attention are vital for guiding human behavior. The parietal cortex has long been recognized as a neural substrate of spatial attention, but the unique role of distinct parietal subregions has remained unclear. Using single-pulse transcranial magnetic stimulation, we found that the angular gyrus of the right parietal cortex mediates spatial orienting during two distinct time periods after the onset of a behaviorally relevant event. The biphasic involvement of the angular gyrus suggests that both fast and slow visual pathways are necessary for orienting spatial attention.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Attention / physiology*
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Brain Mapping
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Cues
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Electric Stimulation / instrumentation
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Functional Laterality / physiology
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Humans
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Magnetics
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Nerve Net / anatomy & histology
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Nerve Net / physiology
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Neuropsychological Tests
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Orientation / physiology
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Parietal Lobe / anatomy & histology
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Parietal Lobe / physiology*
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Perceptual Disorders / physiopathology
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Photic Stimulation
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Psychomotor Performance / physiology
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Reaction Time / physiology*
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Space Perception / physiology*
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Visual Fields / physiology
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Visual Pathways / anatomy & histology
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Visual Pathways / physiology*