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- Title
Voluntary orienting is dissociated from target detection in human posterior parietal cortex.
- Authors
Corbetta, M; Kincade, J M; Ollinger, J M; McAvoy, M P; Shulman, G L
- Abstract
Human ability to attend to visual stimuli based on their spatial locations requires the parietal cortex. One hypothesis maintains that parietal cortex controls the voluntary orienting of attention toward a location of interest. Another hypothesis emphasizes its role in reorienting attention toward visual targets appearing at unattended locations. Here, using event-related functional magnetic resonance (ER-fMRI), we show that distinct parietal regions mediated these different attentional processes. Cortical activation occurred primarily in the intraparietal sulcus when a location was attended before visual-target presentation, but in the right temporoparietal junction when the target was detected, particularly at an unattended location.
- Publication
Nature neuroscience, 2000, Vol 3, Issue 3, p292
- ISSN
1097-6256
- Publication type
Journal Article
- DOI
10.1038/73009