Minimum-risk path finding by an adaptive amoebal network

Toshiyuki Nakagaki, Makoto Iima, Tetsuo Ueda, Yasumasa Nishiura, Tetsu Saigusa, Atsushi Tero, Ryo Kobayashi, Kenneth Showalter

Research output: Contribution to journalArticlepeer-review

162 Citations (Scopus)


When two food sources are presented to the slime mold Physarum in the dark, a thick tube for absorbing nutrients is formed that connects the food sources through the shortest route. When the light-avoiding organism is partially illuminated, however, the tube connecting the food sources follows a different route. Defining risk as the experimentally measurable rate of light-avoiding movement, the minimum-risk path is exhibited by the organism, determined by integrating along the path. A model for an adaptive-tube network is presented that is in good agreement with the experimental observations.

Original languageEnglish
Article number068104
JournalPhysical review letters
Issue number6
Publication statusPublished - Aug 10 2007
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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