Anterior Regions of Monkey Parietal Cortex Process Visual 3D Shape

@article{citeulike:1556894, abstract = {Summary 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.}, author = {Durand, Jean-Baptiste and Nelissen, Koen and Joly, Olivier and Wardak, Claire and Todd, James T. and Norman, Farley J. and Janssen, Peter and Vanduffel, Wim and Orban, Guy A. }, citeulike-article-id = {1556894}, doi = {http://dx.doi.org/10.1016/j.neuron.2007.06.040}, journal = {Neuron}, keywords = {brian, fmri, grasping, nichola}, month = {August}, number = {3}, pages = {493--505}, posted-at = {2007-08-14 14:42:19}, priority = {2}, title = {Anterior Regions of Monkey Parietal Cortex Process Visual 3D Shape}, url = {http://dx.doi.org/10.1016/j.neuron.2007.06.040}, volume = {55}, year = {2007} }

TY - JOUR ID - citeulike:1556894 L3 - citeulike-article-id:1556894 TI - Anterior Regions of Monkey Parietal Cortex Process Visual 3D Shape JF - Neuron VL - 55 IS - 3 SP - 493 EP - 505 N2 - Summary 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. KW - brian KW - fmri KW - grasping KW - nichola AU - Durand, Jean-Baptiste AU - Nelissen, Koen AU - Joly, Olivier AU - Wardak, Claire AU - Todd, James AU - Norman, Farley AU - Janssen, Peter AU - Vanduffel, Wim AU - Orban, Guy PY - 2007/08/02/ UR - http://dx.doi.org/10.1016/j.neuron.2007.06.040 ER -