2013 Fiscal Year Final Research Report
Modeling and analysis of strong interactions among heterogenous localized patterns and its applications to biological problems
| Project Area | The study on the neural dynamics for understanding communication in terms of complex hetero systems |
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| Project/Area Number |
21120003
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| Research Category |
Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
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| Allocation Type | Single-year Grants |
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| Review Section |
Complex systems
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| Research Institution | Tohoku University (2011-2013)
Hokkaido University (2009-2010) |
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Principal Investigator |
NISHIURA Yasumasa 東北大学, 原子分子材料科学高等研究機構, 教授 (00131277)
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| Co-Investigator(Kenkyū-buntansha) |
KOKUBU Hiroshi 京都大学, 大学院理学研究科, 教授 (50202057)
UEDA Keiichi 富山大学, 大学院理工学研究部, 准教授 (00378960)
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| Co-Investigator(Renkei-kenkyūsha) |
ARAI Zin 北海道大学, 大学院理学研究院, 准教授 (80362432)
UEDA Keiichi 富山大学, 大学院理工学研究部, 准教授 (00378960)
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| Project Period (FY) |
2009-07-23 – 2014-03-31
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| Keywords | ヘテロ個体 / 余次元 / 反応拡散系 / 大域分岐 / 特異点 / 衝突現象 |
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| Research Abstract |
We investigated how the system responds to an environmental change in space and time for the following cases: self-generation of traveling pulses at the defect points in the media, synchronization and de-synchronization of EEG by the stimulus of TMS, and a flexible switching of attractors in response to the environmental change. As for the pulse-generators, it was found that double-homoclinic-loop of butterfly type plays an organizing center from dynamical system point of view. An oscillator network model of FHN type with multiple internal states was presented to explain the above dynamical behaviors of EEG. Also it was shown that such a network model has a spontaneous loop-finding ability and robust against the destruction of such structure.
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