Article abstract
Nature Neuroscience 11, 216 - 223 (2008)
Published online: 13 January 2008 | doi:10.1038/nn2039
Integrating motion and depth via parallel pathways
Carlos R Ponce1,2, Stephen G Lomber3 & Richard T Born2
Abstract
Processing of visual information is both parallel and hierarchical, with each visual area richly interconnected with other visual areas. An example of the parallel architecture of the primate visual system is the existence of two principal pathways providing input to the middle temporal visual area (MT): namely, a direct projection from striate cortex (V1), and a set of indirect projections that also originate in V1 but then relay through V2 and V3. Here we have reversibly inactivated the indirect pathways while recording from MT neurons and measuring eye movements in alert monkeys, a procedure that has enabled us to assess whether the two different input pathways are redundant or whether they carry different kinds of information. We find that this inactivation causes a disproportionate degradation of binocular disparity tuning relative to direction tuning in MT neurons, suggesting that the indirect pathways are important in the recovery of depth in three-dimensional scenes.
- Harvard-MIT Division of Health Sciences and Technology, Harvard Medical School, 260 Longwood Avenue, Boston, Massachusetts 02115, USA.
- Department of Neurobiology, Harvard Medical School, 220 Longwood Avenue, Boston, Massachusetts 02115, USA.
- Department of Physiology and Pharmacology and Department of Psychology, The University of Western Ontario, Robarts Research Institute, 100 Perth Drive, London, Ontario, Canada, N6A 5K8.
Correspondence to: Carlos R Ponce1,2 e-mail: carlos_ponce@hms.harvard.edu
MORE ARTICLES LIKE THIS
These links to content published by NPG are automatically generated.
NEWS AND VIEWS
Binocular vision Seeing in reverseNature News and Views (18 Sep 1997)
Stereoscopic visual processingNature News and Views (04 May 1978)
See all 3 matches for News And ViewsRESEARCH
Autologous hematopoietic stem cell transplantation for breast cancer in Europe: critical evaluation of data from the European Group for Blood and Marrow Transplantation (EBMT) Registry 1990?1999Bone Marrow Transplantation Original Article
Cortical area MT and the perception of stereoscopic depthNature Letters to Editor (13 Aug 1998)
See all 71 matches for Research
