| Project/Area Number |
23700316
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Cognitive science
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| Research Institution | Kochi University of Technology |
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Principal Investigator |
JIANG Yinlai 高知工科大学, 公私立大学の部局等, 講師 (70508340)
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| Project Period (FY) |
2011 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
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| Keywords | 脳認知科学 / 視覚補間 / 欠損文字 / 認知症 / 介護予防 / 断片文字 / 定量化 / 最短距離連結 / 最短距離 / 近赤外分光法 / 両側前頭葉 |
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| Research Abstract |
The visual recognition system has a capability, called visual interpolation ability, to identify objects that exist in part behind some bodies or are seen through apertures in something. We have studied the computational model and the neural basis of the visual interpolation ability using fragmented letters. A least-distance connection model, which hypothesize that the fragmented visual information is recognized based on the distances between the information, was proposed and validated. Functional imaging of the brain showed that that fragmented-letter identification was accompanied by greater activation in the bilateral dorsolateral, inferior, and lateral frontal cortices, compared to complete-letter identification. Experimental results illustrated that the bilateral extent of leukoaraiosis, however small it may be, was significantly associated with the decline of the visual interpolation ability. The results showed the useful possibility of our method for early detection of cognitive impairment.
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