Anterior regions of monkey parietal cortex process visual 3D shape

被引:139
作者
Durand, Jean-Baptiste
Nelissen, Koen
Joly, Olivier
Wardak, Claire
Todd, James T.
Norman, J. Farley
Janssen, Peter
Vanduffel, Wim
Orban, Guy A.
机构
[1] Catholic Univ Louvain, Neuro & Psychofysiol Lab, Sch Med, B-3000 Louvain, Belgium
[2] Ohio State Univ, Dept Psychol, Columbus, OH 43210 USA
[3] Western Kentucky Univ, Dept Psychol, Bowling Green, KY 42101 USA
[4] Athinoula A Martinos Ctr Biomed Imaging, Charlestown, MA 02129 USA
关键词
D O I
10.1016/j.neuron.2007.06.040
中图分类号
Q189 [神经科学];
学科分类号
071006 ;
摘要
The intraparietal cortex is involved in the control of visually guided actions, like reach-to-grasp movements, which require extracting the 3D shape and position of objects from 2D retinal images. Using fMRI in behaving monkeys, we investigated the role of the intraparietal cortex in processing stereoscopic information for recovering the depth structure and the position in depth of objects. We found that while several areas (CIP, LIP, and AIP on the lateral bank; PIP and MIP on the medial bank) are activated by stereoscopic stimuli, AIP and an adjoining portion of LIP are sensitive only to depth structure. Furthermore, only these two regions are sensitive to both the depth structure and the 2D shape of small objects. These results indicate that extracting 3D spatial information from stereo involves several intraparietal areas, among which AIP and anterior LIP are more specifically engaged in extracting the 3D shape of objects.
引用
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页码:493 / 505
页数:13
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