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A mathematical model for adaptive transport network in path finding by true slime mold

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タイトル: A mathematical model for adaptive transport network in path finding by true slime mold
著者: Tero, Atsushi 著作を一覧する
Kobayashi, Ryo 著作を一覧する
Nakagaki, Toshiyuki 著作を一覧する
キーワード: Physarum polycephalum
Mathematical modeling
Natural adaptive networks
発行日: 2007年 2月21日
出版者: Elsevier
誌名: Journal of Theoretical Biology
巻: 244
号: 4
開始ページ: 553
終了ページ: 564
出版社 DOI: 10.1016/j.jtbi.2006.07.015
抄録: We describe here a mathematical model of the adaptive dynamics of a transport network of the true slime mold Physarum polycephalum, an amoeboid organism that exhibits path-finding behavior in a maze. This organism possesses a network of tubular elements, by means of which nutrients and signals circulate through the plasmodium. When the organism is put in a maze, the network changes its shape to connect two exits by the shortest path. This process of path-finding is attributed to an underlying physiological mechanism: a tube thickens as the flux through it increases. The experimental evidence for this is, however, only qualitative. We constructed a mathematical model of the general form of the tube dynamics. Our model contains a key parameter corresponding to the extent of the feedback regulation between the thickness of a tube and the flux through it. We demonstrate the dependence of the behavior of the model on this parameter.
Relation (URI):
資料タイプ: article (author version)
出現コレクション:雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

提供者: 中垣 俊之


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