Priors and visual perception
| Project/Area Number |
24300146
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Partial Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Fusional basic brain science
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| Research Institution | The Institute of Physical and Chemical Research |
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Principal Investigator |
GARDNDER JUSTIN 独立行政法人理化学研究所, 脳科学総合研究センター, チームリーダー (70565134)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥18,850,000 (Direct Cost: ¥14,500,000、Indirect Cost: ¥4,350,000)
Fiscal Year 2014: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2013: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2012: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
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| Keywords | 事前知識 / Priors / fMRI / Attention / Vision / Perception / 注意 / 視覚 / 知覚 |
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| Outline of Final Research Achievements |
Often our visual sense gives us only ambiguous or uncertain information about the world. A powerful set of theories suggest that we should use prior knowledge to disambiguate such sensory evidence. This Kakenhi was geared towards understanding the representations of such prior information on visual processing. We chose to study this framework of Bayesian inference in the visual system for which there is considerable knowledge about the basic neural circuitry that represents sensory responses. Using functional imaging, computational analyses and behavioral measurement we found a representation of visual motion that incorporates a prior for slow movement. We have also examined how prior cues indicating the relevance of particular locations can enhance behavioral performance by efficient selection of sensory signals. Finally, we have uncovered evidence for a behavioral switching heuristics in which subjects switch between priors and evidence rather than integrate the two.
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Report
(4 results)
Research Products
(31 results)
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[Journal Article] Demonstration of tuning to stimulus orientation in the human visual cortex : A high-resolution fMRI study with a novel continuous and periodic stimulation paradigm.2013
Author(s)
Sun, P., Gardner, J. L., Costagli, M., Ueno, K., Waggoner, R. A., Tanaka, K., and Cheng K
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Journal Title
Cerabral Cortex
Volume: 27
Issue: 7
Pages: 1618-29
DOI
Related Report
Peer Reviewed
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[Journal Article] Functional signalers of changes in visual stimuli : Cortical responses to increments and decrements in motion coherence.2012
Author(s)
Gardner, J. L., Wan, X., Ricciardi, E., Pietrini, P., Tanaka, K., and Cheng, K.
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Journal Title
Cerebral Cortex
Volume: 24
Issue: 1
Pages: 1-9
DOI
Related Report
Peer Reviewed
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[Presentation] 事前情報と視覚
Author(s)
Gardner JL
Organizer
応用脳科学「ニューロアテンション研究会」
Place of Presentation
東京
Related Report
Invited
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[Presentation] 視覚注意について
Author(s)
Gardner JL
Organizer
応用脳科学アカデミー「脳と認知・身体・行動」
Place of Presentation
東京
Related Report
Invited
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