| Project/Area Number |
15K05755
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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 |
Design engineering/Machine functional elements/Tribology
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| Research Institution | The University of Tokyo |
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Principal Investigator |
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| Research Collaborator |
UEDA Kazutaka 東京大学, 大学院工学系研究科, 講師
MURAKAMI Tamotsu 東京大学, 大学院工学系研究科, 教授
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
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| Keywords | 感性設計 / 期待 / 知覚 / クロスモーダル / 数理モデル / 符号化原理 / 大きさ重さ錯覚 / 不確実性 / 期待効果 / 素材認識 / 感性 / 設計工学 / 材料 / 質感 / 錯覚 / 材質感 |
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| Outline of Final Research Achievements |
Prior expectation affects posterior perceptual experience. This contextual bias is called expectation effect. Previous studies have observed two different patterns of expectation effect: contrast and assimilation. Contrast magnifies the perceived incongruity, and assimilation diminishes the incongruity. This study proposes a computational model that explains the conditions of contrast and assimilation based on neural coding principles. This model proposed that prediction error, uncertainty, and external noise affected the expectation effect. Computer simulations with the model show that the pattern of expectation effect shifted from assimilation to contrast as the prediction error increased, uncertainty decreased the extent of the expectation effect, and external noise increased the assimilation. We verified the simulation results by comparing to an experimental result using the size-weight illusion (SWI) as a case of the expectation effect.
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