2013 Fiscal Year Final Research Report
Adaptive weighting of binocular correlation and matching computation in stereopsis
| Project/Area Number |
23240047
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Neuroscience in general
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| Research Institution | Osaka University |
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Principal Investigator |
FUJITA Ichiro 大阪大学, 生命機能研究科, 教授 (60181351)
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| Project Period (FY) |
2011-05-31 – 2014-03-31
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| Keywords | 両眼立体視 / 両眼視差 / 知覚 / 大脳皮質連合野 / 霊長類 / V4野 / ２光子イメージング / 一次視覚野 |
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| Research Abstract |
Stereoscopic system weights correlation- and match-based disparity representations to support perception of binocular depth. We found that fine depth perception mainly uses the match-based representation, while coarse depth perception combines both. The brain also exploits correlation-based representation for rapidly refreshed stimuli, whereas match-based representation is used for slowly changing or stationary stimuli. Single-unit recording and micro-stimulation experiments in macaque monkeys show that neuronal activity in visual area V4 directly underlie fine depth judgement.
We also developed techniques to apply 2-photon laser imaging to visual area V4 in monkeys, which will allow us to reveal the functional architecture of this area for stereopsis.
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[Journal Article] Toward a unified theory of visual area V42012
Author(s)
Roe, A.W., Chelazzi, L., Connor, C.E., Conway, B.R., Fujita, I, Gallant, J.L., Lu, H., Vanduffel, W
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Journal Title
Neuron
Volume: 74
Pages: 12-29
DOI
Peer Reviewed
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