Motion perception in depth induced by cast shadow.
| Project/Area Number |
23500382
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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 |
Neuroscience in general
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| Research Institution | Tokyo Medical and Dental University |
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Principal Investigator |
NARUMI Katsuyama 東京医科歯科大学, 医歯(薬)学総合研究科, 助教 (00291906)
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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 |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2011: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 奥行き知覚 / キャストシャドウ / 機能的MRI / 背側経路 / サル / 両眼視差 / 単眼性奥行き手がかり / V3A野 / 頭頂間溝 |
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| Research Abstract |
Cast shadow is a salient monocular depth cue. In the present study, we investigated which cortical areas are involved in depth perception by moving cast shadow with functional MRI technique. A movie of a motion illusion was presented to participants. They were required to discriminate the perceived motion in depth (approaching and receding) of a square induced by its moving shadow cast on the background. The fMRI result showed activation in the bilateral hMT, V3A, and the right posterior intraparietal sulcus. Activation in these areas was also observed during discrimination of approaching and receding of a square represented by binocular disparity. These results suggest that cortical areas in the dorsal pathway may be involved in the integration of binocular and monocular depth cues and motion perception in depth induced by cast shadow. We have also revealed that macaque monkeys have depth perception by cast shadow by behavioral study.
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Report
(4 results)
Research Products
(8 results)
