Wiring cost in the organization of a biological neuronal network

被引:55
作者
Ahn, Yong-Yeol
Jeong, Hawoong
Kim, Beom Jun [1 ]
机构
[1] Sungkyunkwan Univ, Dept Phys, Suwon 440746, South Korea
[2] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea
关键词
biological network; neuronal network; wiring cost;
D O I
10.1016/j.physa.2005.12.013
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
To find out the role of the wiring cost in the organization of the neuronal network of the nematode Caenorhabditis elegans, we build the spatial neuronal map of C elegans based on geometrical positions of neurons. We show that the number of interneuronal connections of the Euclidean length d decays exponentially with d, implying that the wiring cost, defined as the sum of the interneuronal distances, plays an important role in the actual neuronal network. Using the two methods to shuffle the neuronal network in systematic ways, the edge exchange and the vertex swapping, we show that positions of neurons are not randomly distributed but organized to reduce the wiring cost. Furthermore, we discuss the trade-off between the wiring cost and the performance of the network. (c) 2006 Elsevier B.V. All rights reserved.
引用
收藏
页码:531 / 537
页数:7
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