| Project/Area Number |
15K12621
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Developmental mechanisms and the body works
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| Research Institution | Osaka University |
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Principal Investigator |
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| Project Period (FY) |
2015-04-01 – 2019-03-31
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| Project Status |
Completed (Fiscal Year 2018)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2017: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2016: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2015: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Keywords | 周辺視 / 視覚の安定性 / 視覚安定性 |
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| Outline of Final Research Achievements |
We examined the mechanism of visual stability using a curveball illusion which emerged in the peripheral visual field related to the body stability. In this illusion, when a vertically-striped ball falls vertically while rotating horizontally in the left (right) direction on the screen, it is perceived as being curved largely left (right) in peripheral vision. We showed that by surrounding the falling ball with a frame, the curve illusion effect in peripheral vision disappears. It suggests that the surrounding frame is one factor that suppresses the integration of the local motion (ball rotating) and the global motion (ball falling). In addition, it was shown that the illusional position of a falling ball can be pointed by participant’s action. It suggests that the localization of the moving object in the peripheral vision would occur after the integration of both movements and also affect the action system.
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| Academic Significance and Societal Importance of the Research Achievements |
我々が自由に動き回っても、視覚世界における背景の中の対象の位置や動きは、常に安定に知覚される。しかし、その脳内メカニズムは未だに解き明かされていない。カーブボール錯視では、自転(localな運動)しながら落下(globalな運動)するボールを周辺視で見たときに、両運動が統合されてカーブして知覚される。我々の着眼点は、逆になぜ日常ではそのような周辺視の特異な運動知覚が生じないのか、その要因を探ることにより、周辺視が視覚安定性にどのように関与しているのかを明らかにしていこうという点であり、当該分野の進展に新たな視点で貢献するものである。
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