Title: Anterior regions of monkey parietal cortex process visual 3D shape
Authors: Durand, Jean-Baptiste *
Nelissen, Koen * ×
Joly, Olivier *
Wardak, Claire
Todd, James T.
Norman, J. Farley
Janssen, Peter
Vanduffel, Wim
Orban, Guy #
Issue Date: Aug-2007
Publisher: Cell Press
Series Title: Neuron vol:55 issue:3 pages:493-505
Abstract: 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.
ISSN: 0896-6273
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Laboratory for Neuro- and Psychofysiology
Research Group Neurophysiology
* (joint) first author
× corresponding author
# (joint) last author

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