Teleonomy: The Feedback Circuit Involving Information and Thermodynamic Processes

• 作者: Gennaro Auletta
• 来源期刊: 现代物理(英文)
• 学科: 医学
• 关键词: CHEMOTAXIS ESCHERICHIA COLI Methylation Feedback Surprisal Kullback - Leibler DIVERGENCE Bayesian Probability Anti-Feedback Teleonomy
• 年，卷（期）: 2011,（3）
• 页码范围: 136-145
• 页数: 10页
• 分类号: R73

摘要

Informational and entropic - metabolic aspects are strictly intertwined in organisms. An overview of bacterial chemotaxis is presented as a good and simple model to study these issues. In particular, the paper shall focus on the ability of the organism to restore its homeostasis not only from a metabolic point of view but also from an informational point of view. The organism cannot accomplish this task without a good “model” of the environment and without undertaking appropriate actions that will somehow modify it or at least the relation “organism - environment”. Subsequently, the concept of teleonomy is developed as a dynamical trade - off between segregation and openness of the organism both from a thermodynamic and informational point of view.