Projects per year
Abstract
Adjacent neurons in visual cortex have overlapping receptive fields within and across area boundaries, an arrangement theorized to minimize wiring cost. This constraint is traditionally thought to create retinotopic maps of opposing field signs (mirror and nonmirror visual field representations) in adjacent areas, a concept that has become central in current attempts to subdivide the extrastriate cortex. We simulated the formation of retinotopic maps using a model that balances constraints imposed by smoothness in the representation within an area and by congruence between areas. As in the primate cortex, this model usually leads to alternating mirror and nonmirror maps. However, we found that it can also produce a more complex type of map, consisting of sectors with opposing field sign within a single area. Using fully quantitative electrode array recordings, we then demonstrate that this type of inhomogeneous map exists in the controversial dorsomedial region of the primate extrastriate cortex.
Original language | English |
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Article number | eaaz8673 |
Number of pages | 10 |
Journal | Science Advances |
Volume | 6 |
Issue number | 44 |
DOIs | |
Publication status | Published - 28 Oct 2020 |
Projects
- 5 Finished
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Hierarchical information processing in the primate visual cortex
Rosa, M. (Primary Chief Investigator (PCI)), McDonnell, M. (Chief Investigator (CI)), Morris, A. (Chief Investigator (CI)), Yu, H.-H. (Chief Investigator (CI)) & Dan, Y. (Partner Investigator (PI))
ARC - Australian Research Council, Monash University, University of South Australia, University of California System
1/04/17 → 31/12/20
Project: Research
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Neural computations for predictive coding in visual cortex
Yu, H.-H. (Primary Chief Investigator (PCI)), Rosa, M. (Primary Chief Investigator (PCI)), Morris, A. (Chief Investigator (CI)) & Triesch, J. (Chief Investigator (CI))
NHMRC - National Health and Medical Research Council (Australia)
1/01/17 → 31/12/19
Project: Research
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Neural circuits for residual vision after damage to striate cortex
Rosa, M. (Primary Chief Investigator (PCI)), Yamamori, T. (Chief Investigator (CI)), Martin, P. (Chief Investigator (CI)), Yu, H.-H. (Chief Investigator (CI)), Mitra, P. (Chief Investigator (CI)), Rajan, R. (Chief Investigator (CI)) & Watakabe, A. (Chief Investigator (CI))
NHMRC - National Health and Medical Research Council (Australia)
1/01/17 → 31/12/20
Project: Research