Analyses of activation-spreading in visual cortex as an index of visual information processing
| Project/Area Number |
23500320
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Cognitive science
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| Research Institution | Hokkaido University |
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Principal Investigator |
KASAI Tetsuko 北海道大学, 教育学研究科(研究院), 准教授 (50241427)
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 視覚情報処理 / 空間的統合 / 選択的注意 / 知覚的体制化 / 事象関連電位 / 視覚 / 注意 / 物体 / 空間 / 選択 / 統合 / 体制化 / 知覚 / 視覚システム |
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| Research Abstract |
It is known that, when attention is directed toward a particular location, attention tends to spread over a whole object/group region that includes the location.The present study examined attention-spreading for emerging objects, by using event-related brain potentials with a high temporal resolution of brain activities. According to results in several experiments, we identified three attention processes: attention-spreading for groups represented as figures against the background at around 150 ms post-stimulus, selection of parsing objects at around 250 ms, and an interaction process between top-down attention and attention-spreading at around 350 ms. We also found that these processes have systematic individual differences.
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Report
(4 results)
Research Products
(60 results)
