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Functional organization of human intraparietal and frontal cortex for attending, looking, and pointingWe studied the functional organization of human posterior parietal and frontal cortex using functional magnetic resonance imaging (fMRI) to map preparatory signals for attending, looking, and pointing to a peripheral visual location. The human frontal eye field and two separate regions in the intraparietal sulcus were similarly recruited in all conditions, suggesting an attentional role that generalizes across response effectors. However, the preparation of a pointing movement selectively activated a different group of regions, suggesting a stronger role in motor planning. These regions were lateralized to the left hemisphere, activated by preparation of movements of either hand, and included the inferior and superior parietal lobule, precuneus, and posterior superior temporal sulcus, plus the dorsal premotor and anterior cingulate cortex anteriorly. Surface-based registration of macaque cortical areas onto the map of fMRI responses suggests a relatively good spatial correspondence between human and macaque parietal areas. In contrast, large interspecies differences were noted in the topography of frontal areas.
Document ID
20040087636
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Astafiev, Serguei V.
(Mallinckrodt Institute of Radiology, Washington University School of Medicine St. Louis, Missouri 63110, United States)
Shulman, Gordon L.
Stanley, Christine M.
Snyder, Abraham Z.
Van Essen, David C.
Corbetta, Maurizio
Date Acquired
August 21, 2013
Publication Date
June 1, 2003
Publication Information
Publication: The Journal of neuroscience : the official journal of the Society for Neuroscience
Volume: 23
Issue: 11
ISSN: 0270-6474
Subject Category
Life Sciences (General)
Funding Number(s)
CONTRACT_GRANT: NS06833
CONTRACT_GRANT: EY00379
CONTRACT_GRANT: MH60974
Distribution Limits
Public
Copyright
Other
Keywords
NASA Discipline Neuroscience
Non-NASA Center
Clinical Trial

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