Article abstract
Nature Neuroscience 11, 224 - 231 (2008)
Published online: 13 January 2008 | doi:10.1038/nn2036
Two hierarchically organized neural systems for object information in human visual cortex
Christina S Konen1,2 & Sabine Kastner1,2,3
Abstract
The primate visual system is broadly organized into two segregated processing pathways, a ventral stream for object vision and a dorsal stream for space vision. Here, evidence from functional brain imaging in humans demonstrates that object representations are not confined to the ventral pathway, but can also be found in several areas along the dorsal pathway. In both streams, areas at intermediate processing stages in extrastriate cortex (V4, V3A, MT and V7) showed object-selective but viewpoint- and size-specific responses. In contrast, higher-order areas in lateral occipital and posterior parietal cortex (LOC, IPS1 and IPS2) responded selectively to objects independent of image transformations. Contrary to the two-pathways hypothesis, our findings indicate that basic object information related to shape, size and viewpoint may be represented similarly in two parallel and hierarchically organized neural systems in the ventral and dorsal visual pathways.
- Department of Psychology, Green Hall, Princeton University, Princeton, New Jersey 08540, USA.
- Center for the Study of Brain, Mind, and Behavior, Green Hall, Princeton University, Princeton, New Jersey 08540, USA.
- Princeton Neuroscience Institute, Green Hall, Princeton University, Princeton, New Jersey 08540, USA.
Correspondence to: Christina S Konen1,2 e-mail: ckonen@princeton.edu
MORE ARTICLES LIKE THIS
These links to content published by NPG are automatically generated.
RESEARCH
Estimation of oxygen metabolism in a rat model of permanent ischemia using positron emission tomography with injectable 15 O-O2Journal of Cerebral Blood Flow & Metabolism Original Article
Visuo-haptic object-related activation in the ventral visual pathwayNature Neuroscience Article (01 Mar 2001)
Cortical responses to invisible objects in the human dorsal and ventral pathwaysNature Neuroscience Article (01 Oct 2005)
Faces and objects in macaque cerebral cortexNature Neuroscience Article (01 Sep 2003)
See all 32 matches for Research