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Measurement of Cellular Chemotaxis with ECIS/Taxis
Published on: April 1, 2012
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"Infotaxis" como una estrategia para la búsqueda sin gradientes
Massimo Vergassola1, Emmanuel Villermaux, Boris I Shraiman
1CNRS URA 2171, Institut Pasteur, In Silico Genetics, 75724 Paris Cedex 15, France.
Nature
|January 26, 2007
Resumen
Los animales que buscan fuentes en entornos turbulentos pueden utilizar un nuevo algoritmo llamado infotaxis. Esta estrategia maximiza la ganancia de información, guiando el movimiento a través de parches de olor intermitentes, similares a los patrones de vuelo de la polilla.
Área de la Ciencia:
- Biología Biología Biología.
- Robótica y Robótica Robótica y Robótica Robótica Robótica Robótica Robótica Robótica Robótica
- Física Física es la física de las cosas.
Sus antecedentes:
- Las bacterias quimiotácticas usan gradientes locales para la navegación.
- Los buscadores macroscópicos se enfrentan a desafíos debido a señales intermitentes en medios fluidos.
- Los animales detectan olores esporádicamente a medida que las manchas se mueven con las corrientes.
Objetivo del estudio:
- Proponer un nuevo algoritmo de búsqueda, infotaxis, para navegar con escasa información.
- Proporcionar una estrategia para los investigadores macroscópicos en entornos con señales fragmentadas.
- Desarrollar un método para maximizar la ganancia de información durante una búsqueda.
Principales métodos:
- Modelado computacional de la propagación del penacho de olor.
- Análisis de datos experimentales de flujos de mezcla.
- Desarrollo del algoritmo de infotaxis basado en la maximización de la ganancia de información.
Principales resultados:
- Los infotaxis guían eficazmente a los buscadores en entornos con señales intermitentes.
- Los resultados simulados y experimentales validan la estrategia de infotaxis.
- Las trayectorias infotácticas imitan comportamientos naturales como el zigzag y el casting.
Conclusiones:
- Infotaxis ofrece una estrategia de búsqueda eficiente para señales ambientales intermitentes.
- El algoritmo es aplicable al diseño de robots olfativos.
- Los principios de infotaxis se pueden generalizar a varios problemas de búsqueda de información escasa.
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