PT - JOURNAL ARTICLE AU - Cherniak, C TI - Component placement optimization in the brain AID - 10.1523/JNEUROSCI.14-04-02418.1994 DP - 1994 Apr 01 TA - The Journal of Neuroscience PG - 2418--2427 VI - 14 IP - 4 4099 - http://www.jneurosci.org/content/14/4/2418.short 4100 - http://www.jneurosci.org/content/14/4/2418.full SO - J. Neurosci.1994 Apr 01; 14 AB - This computational neuroanatomy study evaluates how well some formalisms derived from combinatorial network optimization theory fit as models for brain structure. At multiple hierarchical levels--brain, ganglion, individual cell--physical placement of neural components appears consistent with a single, simple goal: minimize cost of connections among the components. The most dramatic instance of this “save wire” organizing principle is reported for adjacencies among ganglia in the nematode nervous system; among about 40,000,000 alternative layout orderings, the actual ganglion placement in fact requires the least total connection length. In addition, evidence supports a component placement optimization hypothesis for positioning of individual neurons in the nematode, and also for positioning of mammalian cortical areas.